When I was a kid I used to sleep like a rock nothing would wake me up but now much older I have became a light sleeper in the sense not so loud noises can wake me up but undisturbed I sleep well.  So I'am still generally a good sleeper and prefer to wake up early even if I can be abit of a night owl..that is if I let myself became one, as I feel I would miss out on too many hours in the morning if I done that.