Sex burns about 360 calories per hour.
860
The earth is approx. 6,588,000,000,000,000,000 tons.
175
The average person's skin weighs twice as much as their brain.
131
By weight, Bone is five times stronger than steel.
417
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
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
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5