A hummingbird weighs less than a penny.
1k
Fidgeting can burn about 350 calories a day.
201
You burn 26 calories in a one minute kiss.
605
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
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99