I've always had a hard time getting up in the morning. When I was 19, unemployed and sleeping too much, I learned that the best way to make myself wake up was to roll over and start reading. The prospect of getting up was too much for my half-awake brain, but it could be lured into reading a book. And reading, would shortly lead to being fully awake.
Today I learned a simpler way, just open your eyes. When the alarm clock goes off, open your eyes. Keep your eyes open for five minutes, and you're awake. That's all it takes.
I tried this, and you're right! It also helps if someone sweeps the curtains open. :)
I just cant resist the obligitory, DUH!