Most mornings, just like you... up and at 'em. Other times my guts don't treat me so nice during the night, and I begrudgingly get up those days. Thankfully it's not always like that. Typically sleep for 6 hours, with at least one wake-up interruption in the middle of the night to piss. Usually can't sleep any longer than that; even trying hard to go back to sleep. However, I distinctly remember how tough it was waking up when I was young. I remember it was like the bed had arms and was pulling me back into it. I remember wanting to go back to sleep so bad... in the hallway, on the couch, on the toilet... I remember being able to stay asleep for 11-12 hours, no problem, not waking up once. There's a bit of biology to all that. Young people just ain't wired for early mornings or short sleep.