there are products that people use for lifting so they get more rest because its supposed to help recovery by putting u in a deeper sleep. Look at ZMA its a certain zinc magnesium thing thats supposed to increase testosterone and it does make u drowsy and have very vivid dreams. I take "Bullet Proof" by muscle pharms and it has ZMA along with other things that are supposed to help. It definately works because i will take it on a empty stomach and like 30 min later ill be really tired and ready to fall asleep and i have crazy dreams. When i wake up i feel real refreshed and no problems getting up.