My sleeping pattern is, due to the internet, entirely messed up. I usually go to sleep quite late, at times ranging from 11 PM to 1 AM or later. I usually get woken up by my alarm clock at 7 AM with the typical mentality of "Nooo, I need 5 more minutes." during weekdays. Usually, I take the 5 minutes and then force myself, and I mean really force myself, to get up and get ready for school. Surprisingly though, I almost never feel tired.
During the weekend, I can be very, very lazy. I can sometimes sleep for more than half the day, untill the point my mother will become angry at me and force me out of my bed.
What I do sometimes have is when I tell myself I'll take 5 minutes, then I open my eyes again and look at the clock, and notice I gave myself a whole hour or so.