A hummingbird weighs less than a penny.
1k
Fidgeting can burn about 350 calories a day.
201
Most elephants weigh less than a blue whale's tongue.
442
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
By weight, Bone is five times stronger than steel.
417
One human hair can support 3 ounces.
191
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Sex burns about 360 calories per hour.
860