It's all a matter of perception

So apparently I forgot to set my alarm last night. (You already know how this is going to end, don't you?) I woke up this morning feeling refreshed and, frankly, wondering how that was possible, since I'd gotten only a handful of hours' sleep. Thinking that I'd woken up before my alarm went off, I looked over at the clock to see what time it was and whaaaaaaat? It was 8:45! No wonder I felt refreshed-- I'd slept for almost NINE HOURS! Suddenly I wasn't so much refreshed and on top of things, but harried and stumbling out of bed. Whoops! I guess we've all had days like that!