Dieters who sleep more take off more fat that those who sleep less.
By weight, Bone is five times stronger than steel.
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
The earth is approx. 6,588,000,000,000,000,000 tons.
You burn more calories sleeping than you do watching television.