I don’t understand falling asleep while driving.

Actually, I do understand falling asleep while driving in that I’ve caught my self several times feeling my mind drift away during some long journey. What I don’t understand is how your body can do that: speeding along at speeds well past your breaking point and deciding that that moment seems like a good time to go ahead and take a nap.

Just a thought I had gliding in to work today, fully awake, but wishing I wasn’t.