I have trouble sleeping as well, and have learned a few things.

First of all, alcohol does not help. The less you drink, the better you will sleep. I am not happy to report this, by any means, but there it is.

Second, if you can't sleep, stretch. Sit up in bed, keep your legs pretty close to straight, grab your toes, and try to touch your chest to your knees. Bend from the hips, not the back. Do not bounce; just try to relax. Do this as long as you can stand it --five or ten minutes, maybe. When you lie back down, you'll sleep like a baby.