[bdjfkrkrk]

I think it's about intensity. It's well known that powerful light in the morning from the sun is good for you. But it needs to be above a certain intensity.

[dorkwood]

I currently have the morning sun blasting through my window every morning, and it feels like it's having the opposite effect: reduced sleep quality and a foggier brain.

[cutemonster]

I've tried to avoid strong sunshine -- UV safe glasses for example.

Now I'm wondering if 5 minutes without sunglasses could be good?

Any link to where you've read about this? Or search words?