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 adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Fidgeting can burn about 350 calories a day.
201
You burn more calories sleeping than you do watching television.
348
A hummingbird weighs less than a penny.
1k
The Main Library at Indiana University sinks over an inch every year because when it was built, engineers failed to take into account the weight of all the books that would occupy the building.
240