Plains-Cow
Best Resource; Always Wins
I use blue screens all the time before bed and sleep like a baby. I also sometimes work out for an hour and shower before bed. I think it's more anxiety people have around sleep performance that causes them restlessness and a "sleep routine" or "sleep hygiene" just provides an illusion of control over your sleep performance, thereby lowering anxiety and improving sleep. That's why sooooo many different sleep hygiene things work for so many different people with little overlap.