On: Sleep tweaks boost night owls' wellbeing

[mkagenius]

Not really sure about the sunlight in the morning. If you can force yourself to a early sleep (either by tiring yourself one day) or slowly shifting it early each day, you will be able to change your sleep cycle.

[Fellshard → mkagenius]

At least personally, I have found sunlight makes waking easier, smoother. So it's probably one factor out of several.