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 average person's skin weighs twice as much as their brain.
131
Sex burns about 360 calories per hour.
860
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
Fidgeting can burn about 350 calories a day.
201
One human hair can support 3 ounces.
191
The cat brain weighs about 30g.
167