Nights that I haven't done some sort of exercise I will be awake on and off every other hour... I've learned that I must take at least a walk or do some stretches before bed. I also learned it's hard to go to sleep if I am on the computer. So before bed I go off and do one of two things:
1: listen to music
2: read a book

Those things help clear my mind. Being on the computer before bed gets me all energized and I can't seem to slow my mind down enough to sleep. Caffeen is also a nono on trying to sleep list. I usually just drink water or sleepy time tea before bed. Concerning how bad I can't sleep.