Sciencing on MSN

Here's why you wake up to pee at night, but not poop

You've probably had to wake up to pee at night but not poop, and that's thanks to surprisingly intelligent parts of your body ...
The Healthy @Reader's Digest on MSN

Peeing at night? What frequent urination says about your health

Waking up to pee once every night is normal. Anything more than that may be nocturia.