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
A million dollars weighs about a metric ton. Hence the expression "a ton of money."
66
One human hair can support 3 ounces.
191
Most elephants weigh less than a blue whale's tongue.
442
The average person's skin weighs twice as much as their brain.
131
You burn more calories sleeping than you do watching television.
348