Sex burns about 360 calories per hour.
860
One human hair can support 3 ounces.
191
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
Fidgeting can burn about 350 calories a day.
201
The cat brain weighs about 30g.
167
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Most elephants weigh less than a blue whale's tongue.
442