/ 2026 / … #doac#thediaryofaceo
Stanford neuroscientist Andrew Huberman explains why getting daylight into your eyes in the first hour of the day may be one of the most powerful things you can do for your health, and why avoiding the sun could be costing you far more than you realise. He starts with the mechanism. Special cells in your eyes called melanopsin ganglion cells run wires directly into your hypothalamus, where your master body clock sits. When you view low-angle morning sunlight, those cells tell your central clock the day has begun, triggering a sharp rise in morning cortisol. That spike is a good thing. It sets up low cortisol and high sleep hormones at night, buffers your stress response, kickstarts your immune system, and benefits your metabolism, mood and ability to learn. Miss that window, and the whole curve shifts in the wrong direction. Discover: • Why morning daylight triggers the cortisol spike you actually want • Why this works even on an overcast winter day in the UK • The study where red light cut blood sugar spikes by over 25% • The vision improvements seen in people over 40, but only before midday • The Swedish study on sunlight and lifespan • The “Netflix inoculation” that protects you from screens at night • Why you probably qualify as a night shift worker • Why cold exposure does not raise cortisol the way you have been told 📺 Watch the full episode here –
• Andrew Huberman: The Real Reason You Can’t…
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