10 Facts About Life You Won't Believe You Didn't Already Know

You should throw away the cotton in your medication bottles.

It's easy to calculate a tip without a calculator

You're tallest first thing in  the morning

You should sleep with your  door closed.

Sleeping in a cold room can help you slim down

You'll yawn more often than you eat breakfast

You can't breathe and swallow simultaneously

Fake smiles can  hurt you.

Babies don't have  kneecaps

The color you see in  pitch darkness  has a name.