How to Time Light for Optimal Sleep & Wakefulness | Samer Hattar & Andrew Huberman

So get bright light of some sort early in the day . Ideally , sunlight , even on a cloudy day , it's going to be brighter than indoor light . That's easy .

How to Time Light for Optimal Sleep & Wakefulness | Samer Hattar & Andrew Huberman

Ok . So get bright light of some sort early in the day . Ideally , sunlight , even on a cloudy day , it's going to be brighter than indoor light .

How to Time Light for Optimal Sleep & Wakefulness | Samer Hattar & Andrew Huberman

But , but in reality , I mean , as long as you let your body get the morning sunlight , which I think is really to me and I there is no evidence . But to me this is if you look at all animals plans this morning sunlight seems to be very important . And I , I , you know , we don't have experiments to show it , but I have a gut feeling that it has a huge impact on humans .

How to Time Light for Optimal Sleep & Wakefulness | Samer Hattar & Andrew Huberman

Most animals in the wild , they actually seem to track the sun . The sun has a huge influence on life on earth . It's actually life on earth is because of sun .

How to Time Light for Optimal Sleep & Wakefulness | Samer Hattar & Andrew Huberman

You turn on artificial lights ? I usually don't turn on artificial light because I know the sun is going to come up eventually . But that's why I don't like the change in the timing that they do .