There were times in university where I would get up at 6 pm, and go to sleep at 6 am. I couldn't understand so-called "morning people". Now, though, if I go to

There were times in university where I would get up at 6 pm, and go to sleep at 6 am. I couldn't understand so-called "morning people". Now, though, if I go to bed tired at 10:30 pm, I wake up rested at 6:30 am. It really is a matter of training. I rarely go to bed later than midnight now, after 20 years of rarely going to bed before midnight. I actually had a very different experience. In college I spent a month trying to become a "morning person." After the initial adjusment period, it worked great for a little under two weeks - I'd go to sleep at 10:30, and hop out of bed at 7:00 feeling fresh and ready to go. But suddenly (perhaps once I finally caught up on my sleep debt) I stopped falling asleep at 11. Instead I'd lie in bed wide awake for two or three hours, and feel as grumpy as ever the next morning. After three consecutive days of that, I gave up on being a morning person and have yet to look back.