Welcome to the very first episode of Protocols Study Group — a YouTube-exclusive series hosted by me, Kevin T. from This Week in My Headphones. I'm a truck driver who spends a lot of time listening to podcasts, and Andrew Huberman's work inspired me to dig deeper into the science behind improving our health, performance, and everyday lives. So when I picked up his book, Protocols: An Operating Manual for the Human Body, I knew I wanted to explore it one protocol at a time.
This is essentially my version of fan art. I'm not affiliated with Huberman, his podcast, or Stanford — I'm simply a fan.
Why start with sleep?
Sleep is the first chapter of the book because it profoundly impacts every aspect of our physiology and psychology. Sleep is the foundation of mental health, physical health, and performance. Poor sleep has been linked to elevated risks of heart disease, stroke, hormonal imbalance, type 2 diabetes, obesity, depression, hypertension, and dementia.
The goal isn't perfection. Aim to sleep well 90–95% of nights. Everyone has a bad night now and then. But sleep shapes how we look, think, and feel. Simply put: we win by sleeping.
The protocol: view sunlight as soon as possible after waking
Sleep Protocol 1 is simple: view sunlight as soon as possible after waking. Look in the direction of the sun for at least 5–10 minutes. No brimmed hat, no window or windshield between you and the sky, no sunglasses. Glasses or contacts are fine. Clouds don't matter. Blink and squint freely.
Your master clock: the SCN
A few centimeters above the roof of your mouth sits a small cluster of neurons called the suprachiasmatic nucleus — the SCN. It's your master circadian clock, coordinating all your cells and organs into a 24-hour rhythm. Your core body temperature, your hormone release, your sleep-wake cycle — all of it follows that rhythm.
Your eyes are wired straight to it. The neural retina, the optic nerves, and the optic chiasm carry signals about the presence or absence of sunlight directly to the SCN. We evolved a sunrise-and-sunset detection system in our eyes that tells the SCN the time of day — it responds to the short and long wavelengths of bright light at low sun angles.
What morning light actually does
Timed sunlight viewing affects your daytime mood, focus, and alertness, and improves your sleep — through three mechanisms working together:
1. It suppresses residual melatonin. Morning light clears out the melatonin still circulating in your brain from the night. 2. It suppresses adenosine. Adenosine is the sleepiness chemical. Morning light keeps it in check, keeping you alert and stopping your clock from drifting later. 3. It amplifies the cortisol awakening response. Think of cortisol as a wakefulness-promoting hormone, not just a stress hormone. It peaks about 60 minutes after waking and bottoms out 4–5 hours into sleep — and reaching that threshold level is what rouses you. Morning sunlight can amplify that rise by as much as 50%, keeping the peak early in the day. Late-day cortisol elevation is what causes sleepiness, anxiety, and metabolic problems. Morning sunlight is the most potent lever for getting the timing right.
The studies back it up: more daytime light correlates with earlier bedtimes. Morning light benefits mood, hormonal health, and daytime energy. And daytime activity improves sleep, which improves energy — a virtuous cycle.
The plain-English version
It's simply getting out of the house in the morning and looking at the sun — or in the direction of the sun — for five to ten minutes. Your eyes tell the SCN to regulate cortisol, melatonin, and adenosine. That's the whole protocol.
This leads right into Sleep Protocol 2, which I hope you come back for. In the meantime, I highly recommend you grab the book yourself — Protocols by Andrew Huberman. Drop your questions in the comments, and join the study group.
Show notes
- Book: Protocols: An Operating Manual for the Human Body by Andrew Huberman
- Protocol: Sleep Protocol 1 — view sunlight as soon as possible after waking; 5–10 minutes facing the sun, no hat, no window, no sunglasses
- Key idea: the SCN is your master clock; morning light suppresses melatonin and adenosine and amplifies the cortisol awakening response by up to 50%
- Kevin's takeaway: we win by sleeping — aim to sleep well 90–95% of nights
- Disclaimer: independent fan-made educational project. Not affiliated with, endorsed by, or sponsored by Andrew Huberman, Huberman Lab, or Stanford University. For educational purposes only — not a substitute for professional medical advice.