The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
The elephant brain weighs about 6,000g.
274
The average person's skin weighs twice as much as their brain.
131
Most elephants weigh less than a blue whale's tongue.
442
By weight, Bone is five times stronger than steel.
417
A hummingbird weighs less than a penny.
1k
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Dieters who sleep more take off more fat that those who sleep less.
159