I had sleeping problems early on after not sleeping for 3 night straight (A streak that was started by police banging on my apartment door at 1am looking for my roommate who had holed himself up in his office to work for a few days without telling anyone, so his girlfriend called the police. The police found him, oblivious in his office, watching a romcom instead of working. I often wonder if my recovery would have gone differently were it not for this).

I was put on klonopin (something every doctor I've talked to since winces when he/she hears) for 2.5 months to help with sleep. I've had bouts of waking and not being able to get back to sleep, but I think generally increasing my activity level, especially exercise, has helped me sleep better.

I do still wake up once or twice, rarely 3 times a night, usually to go to the bathroom, but I don't have much trouble falling back asleep. I did this before the concussion though. Sleeping straight through the night would be great, but I don't think it's absolutely necessary to have restful sleep. Before modern light pollution, apparently many people would wake for a couple hours in the middle of the night, experiencing a strange calm/alertness, which some have described as an altered state of consciousness.