Splitimage, look at what I got in an email from Harvard Medical School (I am subscribed to their sleep-related news updates).

Harvard Medical School experts reveal:
Secrets to a great night’s sleep
Dear TCJ,

Getting enough sleep is as important for your body as eating right, exercising, and practicing good dental hygiene.

It was my first time seeing good dental hygiene mentioned as equally important to eating right, exercising, and sleeping well. Wow!