ndmmxiaomayi SG Depends. Most of the time it's between 2 to 6 hours. On busy days, I don't get to sleep. When I'm sick, I can sleep the whole day.
udontknowme SG 0-24 though ive only managed to sleep for 24 hours ONCE... and i did wake up a few times...but only for a few minutes each time. hehehe