Hitting Snooze

I use my cell phone instead of my alarm clock to wake me up in the morning. It may seem weird, but if I use my alarm clock, I know exactly where the button is to turn off the alarm- not just snooze, mind you, but off. If I use my cell phone, I can hit a button on the side of the phone to make the thing snooze. To turn off the alarm, I have to go through the effort of opening the phone (which then shines a light in my face) and finding the right button to push.

So far, so good. But recently I've developed a nasty habit of not even consciously realizing that I'm ignoring my alarm. If it's out of reach, I wake up for a moment then fall back asleep almost instantly, and my family can tell you that this alarm is loud. If it's within reach, I grab it and hold it in my hand as I fall back asleep, unconsciously pushing the snooze button on the side until the poor alarm gives up after an hour or so. Then I end up waking up at 1PM instead of 9AM (as happened today). It doesn't seem to matter how much sleep I've had, and I always wake up not remembering doing any of this.

Any ideas? I'm going back to school next week, where a full night's sleep is a luxury and 8:30 classes come early. Sad face.