I'm usually up 48 hours at a time. I don't sleep unless I take a sleeping pill so I just keep going like a timex watch. Usually, I am quilting and I usually check in here a couple of times during the night. Lately I have been quilting and watching the Olympics. I get lots of things done during the night. When my children were little, I used to do this and go grocery shopping, clean my house, do laundry, and bake bread or other goodies for the next day. It works for me