Ok so this is an idea i thought about earlier. This would require u to be on vacation or something and have a bit of time to waste. Ok so my idea is, say you stay up for like a day or so, then when you go to sleep your going to sleep longer than you would usually.Like i said you'd be wasting alot of time and such, plus you couldnt let people bother you while your sleeping. Ok so anyways my theory would be that you would dream longer therefore having more time to realize your dreaming and more time to control your dreams. Just an idea, tell me what you think.