The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
You burn more calories sleeping than you do watching television.
348
Dieters who sleep more take off more fat that those who sleep less.
159
Sex burns about 360 calories per hour.
860
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
A hummingbird weighs less than a penny.
1k
By weight, Bone is five times stronger than steel.
417