The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
Dieters who sleep more take off more fat that those who sleep less.
159
Sex burns about 360 calories per hour.
861
By weight, Bone is five times stronger than steel.
417
A hummingbird weighs less than a penny.
1k
Most elephants weigh less than a blue whale's tongue.
442
A million dollars weighs about a metric ton. Hence the expression "a ton of money."
66
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99