What's a good research question that involves sleeping disorders?

I'm doing an research project for biology which require me to research that topic in detail from the anatomy, histology, etiology, phsiology, and etc. It's just like researching a topic for health but I need to research the inner body(ex. how it effects the body and etc.). So what's some good questions that involves sleeping disorders? I need answers as soon as possible.

Personally I think your question itself is a good question.
It's 2:49 am where I am and I'm wondering why I woke up at 1:00 am
and can't go back to sleep.
Mine might be stress related, although this has gone on for months.
I'm obsessive/ compulsive and take medication DO I need to increase the dosage?
My best 3 friends have died since 1993. Last one a week ago.
Pooter, Sweetpea and LuLu.
My dad died a year ago, my uncle died yesterday.
It's making me crazy, I'm tired all the time I'm crabby , I'm 69 and wondering how long I have to go.
If you are able to get a question or a thought from my early morning ramblings from being so tired and unable to sleep then please do so.
I worry about the situation the world is in right now and how the heck people with children can afford to feed and clothe them with prices heading for the outer limits. How many people are out here worrying about world conditions and can't sleep because of it?