I’ve started throwing a black t shirt over my eyes at night. Looks stupid, but it works. 1) I thought I had lost my ability to sleep in when needed because of

I’ve started throwing a black t shirt over my eyes at night. Looks stupid, but it works. 1) I thought I had lost my ability to sleep in when needed because of my age. Turns out I’m just more sensitive to light. 2) It even helps in the middle of a dark night. It’s a little darker, a little quieter, a little warmer. There was a paper recently about how maybe REM sleep warms the brain. Maybe there was something to nightcaps as well.