I don't have insomnia but I've always just been a night owl, I don't know why but I like to clean at night like after everyone's gone to bed. Even when I was little I didn't want to go to bed I just wanted to stay up, my mom thought I had a sleeping issue or something, I just like staying up a little later than every one else, I usually go to bed around 11:30- midnight and I wake up every morning at 6:00 which gives me 2 hours to get ready for school. I'm never tired in class or anything I'm just used to staying up late, and my body has gotten used to it.