The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
Sex burns about 360 calories per hour.
860
The average person's skin weighs twice as much as their brain.
131
Most elephants weigh less than a blue whale's tongue.
442
The elephant brain weighs about 6,000g.
274
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
One human hair can support 3 ounces.
191