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Speaker 0 asks: Should we stop wearing sunglasses? Speaker 1 responds: Yes. Except we should be wearing them indoors and at night, not outdoors during the day. When you wear sunglasses outdoors, they block the UV, and that's kind of what most people wear them for. Things are bright. Well, reason things are too bright for most people is because they don't get out at dawn to see the sunrise. And if they did, their eyes would adjust to the sun and they wouldn't need sunglasses. We've been told forever from optometrists and doctors that UV is bad for the eyes. And in fact, our eyes have receptors to read the ultraviolet light. And when we cover them with sunglasses, we cannot read how much UV is in the sun, and so we get sunburned. Speaker 0 asks: So you are an expert in all things circadian rhythm and light diet. So what time are you waking up, and what time are you going to bed? Speaker 1 answers: So this eight hours of sleep a night, I think is bull. I wake up with the sun. I actually need to sleep less in the summer and more in the winter, and that's how we're biologically designed. We are a light poisoned population. The light that we're exposed to is highly intense in the blue color of light. There's no infrared, almost zero red light, very little yellow, and a ton of blue light. Blue light in itself is not bad, but blue light becomes toxic when we're exposed to too much of it. It messes with our circadian rhythm. It is actually associated with cancer, heart disease, diabetes, and obesity if we see it after sunset, and macular degeneration during the day because we have so much of it hitting our eyes causing free radicals.

Dr. Alexis Cohen (Jasmine Cohen) and the host discuss a wide-ranging view of health, science, and society, centered on mitochondria, light biology, and decentralized approaches to knowledge and healing. - On science, health, and authority: - Cohen argues that “we really haven’t been doing science for about seventy years now” and that modern science has become scientism, with people looking to scientists and doctors as authority figures over personal health, even though no one can fully know another’s lived body experience. - She emphasizes that aging is a reflection of mitochondrial heteroplasmy and that there are ways to slow or speed that burden, but contemporary living habits harm mitochondrial health. She asserts there are incentives to promote lifestyle advice that is not monetizable (outdoor activity, barefoot grounding, seasonal eating, movement), which she says slows research and access to information. - The conversation asserts a need to reclaim personal authority over health and to recognize life as magical and miraculous. - Personal entry into Bitcoin and crypto curiosity: - Cohen notes she and her partner became interested in Bitcoin in 2018, with a continued engagement including taking a cryptography course to understand the underlying proofs rather than accepting information at face value. - Background and work: - The host introduces Cohen as a Princeton-trained molecular biologist, a PhD focusing on metabolism, gut health, and circadian biology, who shifted from academic research to helping people rebuild health through nutrition, movement, mitochondrial function, and light exposure. Cohen shares that her own childhood illnesses, weight issues, and colitis prompted a pivot from academia to health coaching, emphasizing ownership of wellbeing through science and practical lifestyle strategies. - Cohen highlights that she values rigorous science but seeks practical lifestyle strategies to empower clients to understand their biology and take ownership of their health. - Dance, embodiment, and biology: - Cohen describes taking up social dancing (salsa, bachata, merengue, fox trot, hustle) and training intensely. She explains dancing challenges the brain in novel ways, requires being guided by a partner, and expands neural connections. - The host shares similar experiences with dance, noting body memory across decades and the importance of movement, rhythm, and social connection for health. - Mitochondria, heteroplasmy, and light: - Cohen explains mitochondria as the battery of the cell, with their own circular DNA and multiple roles in ATP production, biosynthesis, and epigenetic regulation. Heteroplasmy, the mutation burden in mitochondrial DNA, reflects dysfunction that can lead to energy production deficits across tissues. - She notes three key mitochondrial outputs: - ATP production powers cellular processes and metabolism. - Metabolic water production (including deuterium-depleted metabolic water). - Biophotons, photons largely in the UV range, emitted by mitochondria and nucleus during electron transport; older, sicker individuals emit more light due to increased permeability of the system. - Cohen argues aging mirrors mitochondrial heteroplasmy and mutation accumulation, with higher mutation burdens in tissues like immune cells, gut, liver, and brain associated with disease. She also discusses that mitochondria contribute to energy, water, and biophotons, and that modern life elevates heteroplasmy by lifestyle choices. - She argues heteroplasmy can be slowed or sped, and that there are actionable interventions—though the exact list is not exhaustively enumerated in this segment. - Why mitochondrial health isn’t the central target: - Cohen says mitochondrial health research is less profitable because it emphasizes lifestyle and environmental changes rather than drugs, which affects funding and research direction. She describes a system where focusing on broad environmental and lifestyle changes could be financially less lucrative than drug-centered approaches. - She expands on historical dynamics in science, including siloing of scientists and the development of a paywalled academic publishing model, suggesting that the system discourages holistic, integrative approaches that would unify mitochondrial biology with systems biology. - Light, circadian biology, and UVA/UVB: - The discussion shifts to light as a regulator of mitochondria. Cohen divides the sun’s spectrum into ultraviolet (UVB and UVA), visible light, blue light, and near infrared (NIR). She emphasizes that near-infrared light penetrates deeply and stimulates mitochondria, while UVB promotes melanin production via POMC and MSH peptides, affecting energy balance, mood, and metabolism. - UVB light triggers alpha-MSH and beta-endorphin production, the latter contributing to mood and dopamine support, and helps regulate energy expenditure and appetite via POMC-derived pathways; UVB exposure supports melanin synthesis, redox balance, and photoreception across tissues. - UVA light activates Neuropsin receptors on eyes and skin, aiding circadian entrainment and nitric oxide production, which improves vasodilation and nutrient delivery. Neuropsin is present in skin and testes; its stimulation is linked to testosterone and fertility enhancements. UVA also helps anchor local circadian rhythms in tissues. - Cohen discusses the misperception that UV light is universally harmful and argues that melanin is not only protective but can facilitate energy capture from high-energy photons to support energy metabolism in humans. Melanin’s roles extend beyond protection to potential energy transduction, with POMC, MSH, and alpha-MSH linking light exposure to metabolic regulation. - The My Circadian app is recommended as a tool to track sunrise, UVA/UVB rise, and lux (brightness) to optimize exposure. Cohen notes indoor environments rarely exceed 1000 lux, while outdoor brightness can reach 60,000–60,200 lux, significantly impacting serotonin production, mood, and cognition. She emphasizes the importance of bright daytime light for circadian alignment and melatonin suppression at night. - Infrared, LEDs, and indoor lighting: - The conversation covers lighting technologies, noting fluorescent tubes and LEDs minimize near-infrared and maximize blue light, which disrupts circadian rhythms and flicker, stressing the eyes and sympathetic nervous system. Cohen argues that modern lighting deprives people of infrared and UV radiation, both critical for mitochondrial function and circadian health. - She criticizes the push for energy efficiency that reduces thermal and infrared energy, arguing it contributes to systemic health issues. She emphasizes the importance of incandescent and near-infrared-rich lighting for indoor environments and sun exposure to sustain metabolic health. - Grounding, EMF, and environmental exposure: - Grounding (direct contact with the earth) is presented as a way to discharge excess positive charge in tissues, reducing inflammatory burden and supporting mitochondrial function. Cohen shares practical grounding instructions—grounding directly to the earth when possible, wearing natural fibers, and using grounding footwear. - Non-native electromagnetic fields (EMFs) from Wi-Fi, Bluetooth, 5G, and other sources are discussed as contributors to mitochondrial dysfunction and inflammation. Cohen cites Robert Becker’s historical work on non-thermal EMF effects and Havana syndrome as context for potential biological risks. She suggests practical mitigation, including reducing EMF exposure, using Ethernet where possible, and using tinfoil to shield exposure in certain situations. Plant life can absorb EMF, and grounding, sunlight, and strategic use of red and infrared light are recommended to compensate where exposure is high. - The discussion includes practical home strategies, EMF-blocking window panels, EMF-blocking paint, and even temporary shielding (e.g., tinfoil) as a do-it-yourself mitigation approach. - Travel, circadian disruption, and protocols: - Cohen outlines travel challenges: high altitude cosmic radiation exposure (non-AVMF exposure), cabin EMFs, circadian misalignment, and sedentary behavior. She suggests pre- and post-travel strategies such as grounding, sun exposure, hydration, lymphatic support, and blue-light management to ease time-zone transitions. - She promotes an ebook protocol focused on lymphatic support and circadian realignment, available for purchase, with a holiday discount code holydays. Blue-light blocking strategies and red-light strategies are included to facilitate adaptation to new time zones. - Health, mental health, and pediatric considerations: - The hosts discuss mental health concerns, including PTSD, anxiety, and depression, emphasizing circadian regulation, light exposure, sleep hygiene, and reducing screen exposure. Cohen notes the importance of bright daytime light and a dark, cool sleeping environment for sleep quality and mood. She mentions a study showing even small nighttime light exposure can influence daytime metabolic markers, emphasizing the importance of darkness at night. - Birth, medications, and vaccines: - They touch on birth experiences, epidurals, and how early life interventions can influence long-term health and microbiome development. Cohen discusses pain as a portal to healing and critiques reliance on certain pharmaceutical approaches. - On vaccines, Cohen describes observed adverse effects post COVID-19 vaccination, including histamine issues, barrier permeability, and rapid cancer reports linked to vaccine exposure, while underscoring the lack of widespread funding to investigate these relationships. She mentions turbo cancers and batch variation as topics already discussed by researchers like Kevin McKernan and a need for independent inquiry. - Decentralization, science, and Bitcoin again: - Cohen envisions a decentralized health system in which multiple modalities (acupuncture, Chinese medicine, Ayurveda, allopathic medicine) can be tested for proof of work, with outcomes guiding what works best for individuals. She believes decentralization is necessary for genuine innovation, with a future vision of a decentralized, funded light research lab and a retreat model to study circadian biology, mitochondrial function, and nature-based health in diverse environments (North America and equatorial regions). - She sees Bitcoin as a tool that enables financial sovereignty and autonomy, providing an opportunity to fund decentralized science and publish findings on blockchain to protect against censorship. She highlights the potential for Bitcoin to support a lab through deflationary funding and to empower researchers and patients alike. - Closing: - The conversation closes with practical resources: Thinkific-hosted classes, an online book club, and a QuantumU course that reframes science education around decentralized, nature-based principles. Cohen emphasizes accessible contact options (Instagram and email) and a holiday discount for courses and ebooks. The participants express enthusiasm for ongoing collaboration, travel and events, and continued education in Bitcoin, science, and holistic health. Overall, the episode centers on mitochondria as a foundational health driver, the essential role of light and circadian biology in energy, mood, metabolism, and aging, and a call for decentralized, nature-aligned science, with Bitcoin framed as a funding and governance tool to empower individuals and researchers to pursue health innovation beyond centralized institutions.

Speaker 0 discusses Dr. Jack Cruz and claims about blue light from screens. They say the impact grew out of CIA and FBI experimentation that began with mind control and electrodes on monkeys' brains, and that they realized they could create the same impact with blue light. They claim that when choosing screen colors, blue was chosen over red because it makes you more lethargic, apathetic, and easier to control. They also mention that red light saunas would have the additional benefit of exposure to red light on the opposite side of the spectrum.

Exposing yourself to sunlight can naturally heal your body, but many people are unaware of this phenomenon. Unfortunately, we have become afraid of the sun due to the introduction of sunglasses, which have been linked to an increase in cancer cases. Sunglasses filter out certain rays of the sun that are essential for our bodies. The pineal gland, which receives sunlight, needs the full spectrum of light to function properly. Our lens breaks down white light into seven colors, which are encoded with chemicals in the pineal gland and then distributed to different parts of the body for basic metabolic processes.

The speaker describes a new device used to measure the spectrum of light, noting that under full sunshine it reveals all seven colors—“just like the rainbow”—and that this natural spectrum is straightforward. When measuring incandescence, the speaker highlights a “beautiful red hue” and claims there is “really none of the other stuff to make you go blind,” implying that incandescent light presents a safe, simple spectrum in comparison to other sources. The speaker then discusses LEDs, stating that they are “super weird to have LEDs” because they “cause blindness, cataracts, dizziness, headaches, fatigue,” and references “that color spectrum” as part of the issue. Fluorescence is described as being almost identical to LEDs in this respect. The speaker also mentions “full moonlight” in this context, implying a comparison between the spectral qualities of LEDs/fluorescent light and moonlight. A key point emphasized is that LEDs and fluorescent bulbs seem to mimic moonlight, which the speaker notes as a source of behavioral or perceptual effects, claiming that this similarity to moonlight is what contributes to people going nuts. The overall message centers on a contrast between the spectra of different light sources—sunlight with its full seven-color spectrum, incandescence with a prominent red hue and fewer problematic elements, and LEDs/fluorescent lighting with problematic health and perceptual effects and a moonlight-like quality.

Number one, early morning sunlight contains a very specific wavelength that stimulates a specific area in your brain that basically reboots your circadian rhythm and resets your day night cycle. Number two, morning sunlight stimulates cortisol release and it stimulates it at the right time. Cortisol is the wake up hormone. Number three, when you get low angle sunlight into your eyes, the retina stimulates your brain to release serotonin and dopamine, which are the feel good neurotransmitters. This improves your overall mood, your level of alertness, as well as your overall cognitive function. So by simply getting up early and watching the sunrise, you can support your body's natural rhythms, improve your mood, and enhance your overall cognitive function.

Getting early morning, low-angle sunlight in your eyes is important for three reasons. First, specific wavelengths reboot your circadian rhythm, improving sleep, alertness, and mood. Second, morning sunlight stimulates cortisol release at the right time, improving metabolism, immune function, and alertness. Third, sunlight stimulates the release of serotonin and dopamine, improving mood, alertness, and cognitive function. Getting up early to watch the sunrise supports natural rhythms, improves mood, and enhances cognitive function.

The speaker describes observing moonlight and notes that the color spectrums appeared as lines, with certain colors missing, and that the moonlight is constantly changing. They claim this is why people go nuts during the full moon. They assert that the Epstein files were dropped two days before the full moon because “everybody goes nuts when they find out that the government's a bunch of pedophiles … and they need to be hung.” They argue that LEDs and fluorescence are very similar to moonlight, producing the same color spectrum, which is why LEDs and fluorescence are used in homes—to give people the same moonlight spectrum. The speaker claims that people walk around with pulsating and flickering light, “going completely crazy,” because the color spectrum from the moon flickers like an LED or fluorescent bulb during the full moon. They say they bought a device to see what the color spectrum is of what is coming off the moon. The speaker contends this is also why incandescent bulbs should be banned, arguing that incandescent bulbs are being removed for a reason: “number one, they're healing on the eyes,” and that there’s a red spectrum which is “actually very beneficial.”

Melatonin, produced by the pineal gland, is the body's natural sleep aid. As darkness increases, melatonin levels rise, signaling the body to prepare for sleep. Blue light from digital devices can suppress melatonin production by tricking the brain into thinking it's daytime. Switching off screens an hour or two before bed may improve sleep. A good night's sleep is a cornerstone of health, so respect melatonin.

Sunlight likely activates intrinsically sensitive melanopsin retinal ganglion cells. These cells are known to set circadian rhythm, enhance mood, focus, and alertness during the day, and improve sleep quality and duration at night. Melanopsin intrinsically photosensitive ganglion cells are also involved in networks within the eye related to blood flow. They also relate to the ciliary body, which controls aperture and movement of key components within the eye. These components relate to the crispness, or acuity, of vision at both short and long range.

What about eye color? Blue and brown are natural and green is the result of a disease. Well, then I must have a disease because I got green eyes. The blue seems to be meant for water. And then brown eyes connecting to the night sky with the stars. this one guy also showed that he could sun gaze perfectly with brown eyes, and I thought that was fascinating. So, you know, you have to think of the color spectrums that are coming off your eyes. Every single thing is picking up on the terrain. Look them in the eyes, and you will see if you know that person. And there's much more that you will know from that person just by connecting to their eyes because you're reading their soul, and they're reading your soul.

Speaker 0 uses a clock metaphor to explain how light, darkness, and temperature regulate our biology. Light and darkness are compared to the hour and minute hands, with sunlight equated to the hour hand and nighttime darkness to the minute hand. Temperature is likened to the second hand. Each hand is important to tell the time, but one is more important than the others. The hour of the day is described as critical because it roughly indicates when it’s time to eat meals—dinner or breakfast. The minute hand indicates, within that hour, what the issue is. The second hand—temperature variation—is a huge factor. The speaker emphasizes that this is the reason melatonin works better when you’re colder. They state that when you sleep at night, the hypothalamus typically must drop about four degrees Celsius in and around itself for better sleep. The discussion then connects temperature to its broader role: it augments the circadian mechanism, which is linked to autophagy and apoptosis, processes that help keep you healthy at night. The speaker uses an example: if someone drinks beer at night, in the presence of light, they may fail to drop their melatonin or their temperature enough to trigger melatonin release. This is presented as an explanation for sleep problems such as sleep apnea and for ongoing weight gain, implying that bad timing of the three “hands” disrupts overall health by breaking the synchrony of these signals. The metaphor expands into a larger framework: every mitochondrial disease is described as a metronome tied to light, dark, and temperature. By organizing known biochemicals within this metronome framework, the listener can feel that things start to make more sense. The speaker suggests that adopting this framework makes the listener a much smarter patient compared to many doctors they might visit, aligning with the speaker’s goal for podcasts of this type. In summary, the talk presents a cohesive model where light (hour hand), darkness (minute hand), and temperature (second hand) regulate circadian biology, sleep, and health. The temperature signal, in particular, potently interacts with melatonin, sleep regulation, autophagy, and apoptosis, and lifestyle factors like alcohol and light exposure can disrupt this system, contributing to sleep disorders and weight gain. The overarching message is that understanding and aligning these three signals can enhance health and empower patients.

Imagine going into a clock store with every clock is an alarm clock and they're on different schedules. It boosts a number of chemicals that need to be released early in the day. That morning sunlight coordinates all the cellular and organ systems of your body. And it sets a timer on some other clocks in the body, including the one that releases melatonin about sixteen hours later to make you sleepy and fall asleep easily. If you don't do it for two days or three days in a row, what happens is that morning increase in cortisol still happens, but it starts getting pushed out towards the afternoon. And that is strongly associated with depressive symptoms, anxiety, and sleeplessness at night, which then just makes it harder to function during the next day.

One hundred percent of mental health issues, there will be some level of circadian disruption. There's a clock in my head. The suprachiasmatic nucleus. Is master clock. And this clock regulates every cell in my body. And it controls the release of a chemical, which makes those cells, organs, every part of my body do stuff. So it is your hypothalamus, so the suprachiasmatic nucleus, it responds to light, and it responds to darkness. So that's like the most pronounced entrainment cue for this master clock. And it then tells, it sends signals to every cell tissue in your body as to what it needs to be doing in the presence of light, in the presence of darkness. And when we are viewing light at a phase of the natural light dark cycle, that is if I am awake when I should be sleeping, or I am sleeping when I should be awake when my body anticipates that, it causes huge amounts of stress in the system. If we do this once or twice, not a big deal. But if we're doing this chronically, Okay, it has massive health consequences.

Exposure to screen type light between the hours of 11PM and 4AM activates a specific circuit in a brain area called the habenula that lowers dopamine and creates a sense of disappointment. So it's pro depressive. That's straight from the discussion that followed: “from 11PM to 4AM, if you're on your phone, if you're looking at a TV or iPad or screen consistently, it's going to make you more depressed.” It was noted that “in theory, yes,” but in practice you would have to do that pretty consistently. The conversation also clarified that it’s the brightness of light, not the color of the light, that matters. Measures to mitigate include dimming it way, way down, or wearing glasses or using biohacking stuff. The claim was reiterated: “the studies by multiple groups are showing that from 11PM to 4AM, if you're on your phone… it’s going to make you more depressed.” The response added that there isn’t just one exposure; rather, “it's not like one exposure,” and “it's going to dim dopamine” or “blunt dopamine.”

The circadian clocks are more sensitive to light, and light is the most dominant time giver. When daylight saving time changes or we travel across time zones, we feel kind of crappy because our daily activities are out of sync with our internal clock.

Let's talk about the bad effects of light. Nowadays because of screens and artificial light, we have access to light at times of day and night that normally we wouldn't. The longer you've been awake, the more sensitive your retina and these cells are to light. You want as much light as is safely possible early in the day, morning and throughout the day, including blue light. So take those blue blockers off during the day unless you have a real issue with screen light sensitivity and you want as little light coming into your eyes artificial or sunlight after say 8PM. And certainly you do not want to get bright light exposure to your eyes between 11PM and 4AM.

Blue light from devices, TVs, and indoor lights signals to the brain that it is daytime. Even when it's dark outside, this light exposure prevents the brain from increasing melatonin production, which is necessary for rest and sleep. The light tells the brain not to produce melatonin because it perceives daylight, hindering the body's natural preparation for sleep.

Mark Baker, founder and president of the Soft Lights Foundation, and Clayton (Speaker 0) discuss the health and societal concerns around LED lighting. Baker argues that LED lights are devastating to health due to their blue-rich spectra, prevalence in night environments, and the resulting impact on sleep, mood, circadian biology, and overall well-being. He describes personal experiences that motivated his activism, including a mental breakdown linked to LED exposure and a subsequent shift to full-time advocacy. Baker explains that LEDs are now ubiquitous: LED headlights in cars, blue-rich LED streetlights, general-service LED lamps in homes, and intense LED indicators on appliances. He notes that emergency vehicles with flashing LEDs are also problematic for some people. He acknowledges that the issue feels overwhelming to many, including bureaucrats, which adds to the difficulty of solving it. The conversation delves into Baker’s backstory. In the mid-2010s, as high-powered LED lights proliferated, he noticed blue-rich headlights and 5,000 Kelvin streetlights that disrupted his psychological wellbeing. Living in California, he experienced intense lighting at night from apartment windows and, after attempting to contest changes with city officials, suffered a severe mental breakdown when his school district refused to turn off the LEDs. This led to hospitalization and redirected his career toward advocacy, studying physics, government regulation, and organizing with others suffering similarly. Baker emphasizes that many people experience LED-induced sensitivities: migraines, epileptic seizures, sleep disruption, and even suicidal thoughts for some. He notes that individuals with astigmatism report driving difficulties due to LED headlights. He characterizes the public as having diverse responses: some people are highly sensitive to LEDs, others notice little to no effect. He frames the community as “canaries in a coal mine” for broader environmental and health impacts. The discussion covers the science of light. The body has photoreceptors beyond the eyes, including in skin and tissues, with blue wavelengths around 450 nanometers linked to circadian regulation. He asserts that artificial light at night interferes with melatonin suppression and cellular repair processes, thereby increasing health risks. He argues that the spectral distribution of many LEDs, with a prominent spike in blue light and no infrared, contrasts with incandescent light, which has a warmer, red-yellow spectrum and includes infrared. He maintains that LEDs are further from natural light than incandescent sources and that this spectral shift affects mood, sleep, and health. On policy and regulation, Baker critiques the 2005 Energy Policy Act, which directed the Department of Energy to pursue solid-state lighting and set a minimum luminous efficacy of 45 lumens per watt. He contends that the DOE did not coordinate with the FDA to ensure safety standards, so LEDs entered markets without assessing flicker, color temperature, or overall quality. He suggests this failure contributed to a mismatch between efficiency goals and health outcomes. He calls for reintroducing safe, healthy lighting and undoing “the effective ban on incandescence,” arguing that incandescents were healthier and that the current LED emphasis ignores health impacts. Baker discusses practical implications for sleep and daily life. He recommends reducing exposure to night-time LED lighting, using warmer color temperatures (around 2,700 Kelvin or lower), and installing measures to limit blue light in bedrooms. He notes that even skin exposure to light and non-visual photoreceptors can affect sleep. He mentions that some LEDs are being redesigned to imitate incandescent light, including “natural light” LEDs with broader spectral distributions and devices that incorporate infrared light to soften nighttime exposure. He also highlights the challenge of modern fixtures that integrate LEDs into fixtures rather than as replaceable bulbs, complicating the shift away from blue-rich lighting. The Soft Lights Foundation provides resources at softlights.org, including a campaign to ban blinding car headlights and an LED incident report for the FDA. Baker mentions a Change.org petition with tens of thousands of signatures, a database of incident reports to push regulatory action, and a resources section with scientific articles. He encourages joining the Ban Blinding LEDs Facebook group and engaging with regulatory and legal efforts (e.g., lawsuits) to address LED-related health concerns. In closing, Baker argues the system resists change, driven by arrogance, incompetence, negligence, and financial incentives, but denies a conspiratorial killing intent. He invites listeners to learn more, sign petitions, and consider environmental and health impacts when choosing lighting options.

Sleep is linked to the core body temperature cycle, and controlling body temperature can control sleep. Core body temperature rises throughout the evening, peaking before dropping. This drop signals the brain to release melatonin. Later in the night, the body temperature increases again, leading to lighter sleep stages and eventually waking.

Heat slows down melatonin production at night. A cooling temperature and environment will help keep your brain and melatonin flowing.