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
One human hair can support 3 ounces.
191
You burn more calories sleeping than you do watching television.
348
The elephant brain weighs about 6,000g.
274
Most elephants weigh less than a blue whale's tongue.
442
Sex burns about 360 calories per hour.
861
By weight, Bone is five times stronger than steel.
417