I do best with a 10 hour sleep but when I need to get up with less than 10 hours I can do it. I don't know if it is due to adrenalin or not since the only times I do that is when I am traveling to see the kids. When my husband had his heart attack and I had to get less than 10 hours I was a jombie. The only aide I take at night is my Clonazepam and Amitryptyllin. Spelling I'm sure is wrong on both those meds. But if I don't take them I don't sleep well at all. So is that addiction???