I am up at night quite often - hormones I'm thinking. I usually go to bed at the same time as my husband - as we use that time for catching up with each other from the day/week. Then I read for a bit - and turn off the light so he can sleep (he works every day - I can stay home). BUT usually sometime in the middle of the night I am back up. I don't like turning on the light again - it wakes him. So, if I truly cannot get back to sleep by just laying there I usually get up, get online, look around, read a bit and then fall asleep on the uncomfortable to sleep on couch/chair and go back to sleep...