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

It doesn't hurt and through a window . I was my understanding is that through a window , it dramatically decreases the amount of light energy . It depends of how , you know , how thick the windows are and how dark they are .

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

I was my understanding is that through a window , it dramatically decreases the amount of light energy . It depends of how , you know , how thick the windows are and how dark they are . So it's , but it's also nice to go outside and to feel the season sunglasses off .

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

So let's divide the day into quarters . What is , what is the proper way to interact with light in the first part of the day ? So I honestly think the easiest thing is waking up , get as much light as you can into your eyes .

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

So what do you do ? You turn on artificial lights ? I usually don't turn on artificial light because I know the sun is going to come up eventually .