Ever try your hand at betting on the ponies? It's a hard sport to bet on if you're just starting, and you should know everything you need to before you start, or you're just going to be throwing your money away.
Naps provide some serious mental and physical benefits, but not if they last too long or occur too late in the day. Ideally, you want to awake from a nap feeling alert and refreshed enough to attack the rest of your tasks with renewed zeal, but not energized to the point where you can't get to sleep at night. Alas, most of us don't know these tricks and end up messing with our sleep cycle (guilty).
