Comment by proee

Exercise HARD. Try doing some Zone 2 cardio for +1 hours, and see if this makes a difference. Or try some HIIT workout (Zone 5) and see how your body responds. A good overall workout machine is a rower. Try to set some kind of PR, like a 2k time trial. Push beyond what you think is possible and see how your body responds. My best sleeps are when I am physically exhausted - so weak that I could fall asleep on a couch (which is normally impossible for me).