Sex burns about 360 calories per hour.
860
Dieters who sleep more take off more fat that those who sleep less.
159
Fidgeting can burn about 350 calories a day.
201
Most elephants weigh less than a blue whale's tongue.
442
By weight, Bone is five times stronger than steel.
417
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.
62
The cat brain weighs about 30g.
167