I'm involved in an experiment.
After learning about, what is it called - Diurnal sleep patterns - I've ditched almost every rule I made about sleeping .
Instead of going to bed at the same time every night, I now go to bed as soon as I feel sleepy. And if I find myself awake for longer than 30 minutes in the middle of the night, I get out of bed. Depending on things I might go back to bed later or try and take a nap later.
the first week of my experiment, according to Apple Health I was getting less sleep each night. But now I think I'm getting more.