Biohacking the Circadian Rhythm
Like Duolingo, but for Biohacking the Circadian Rhythm. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free during early access · No credit card · iPhone & Android

Key ideas in Biohacking the Circadian Rhythm
- Indoor lighting vs outdoor lux
- Neural pathway light threshold
- Immediate hormonal response
- Setting the sleep timer
- The biological sequence from light exposure to long-term energy
- Total photon count can compensate for lower intensity if the early window is missed
- Indoor lighting fails to trigger morning reset
- Light exposure timing can shift the clock forward or backward
- Biological sequence from light to energy
- The shiver threshold indicates the 'Minimum Effective Dose' for norepinephrine release
- Full immersion provides hydrostatic pressure and constant thermal conduction
- Staying long enough to trigger a shiver provides the dopamine 'plateau' without overtaxing the nervous system
- Cold showers often leave 'warm spots' on the skin, delaying the metabolic response
- Cold-induced dopamine spikes do not have a 'crash' like stimulants
- The goal is a targeted hormonal response, not a test of willpower
- Distinguishing between the physiological impact of showers versus immersion
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Biohacking the Circadian Rhythm the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
Why might you still feel groggy in a room that looks 'bright' to your eyes?
Get it right to open this lesson and 25 more in the app.
Where Biohacking the Circadian Rhythm takes you
Master your internal clock to unlock peak cognitive performance and metabolic health. Learn to manipulate light, temperature, and nutrient timing to synchronize your biology with your lifestyle.
- 1
Immediate Energy Gains
- Strategic Lux Management for Morning Alertness
- The Minimum Effective Dose of Cold Thermogenesis
- Caffeine Half-Life and the Adenosine Clearance Window
- Optimizing the Post-Prandial Glucose Response
- 2
Precision Recovery and Sleep Architecture
- Melatonin Suppression and Blue Light Mitigation
- Non-Sleep Deep Rest (NSDR) Protocols
- Temperature Minimums and Sleep Cycle Transitions
- Heart Rate Variability (HRV) as a Recovery Metric
- Magnesium Threonate and GABAergic Modulation
- Mouth Taping and CO2 Tolerance Training
- 3
The Molecular Clockwork
- Suprachiasmatic Nucleus (SCN) Signaling
- CLOCK and BMAL1 Gene Expression
- Autophagy and the Fasting-Mimicking Effect
3 sections · 13 units · 26 levels. Built to play, not to enroll.
You pick the voice
Biohacking the Circadian Rhythm is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Biohacking the Circadian Rhythm today.
Download Tomo, search Biohacking the Circadian Rhythm, and play your first lesson in under a minute.