Sex burns about 360 calories per hour.
860
The average person's skin weighs twice as much as their brain.
131
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
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Fidgeting can burn about 350 calories a day.
201
Most elephants weigh less than a blue whale's tongue.
442
Dieters who sleep more take off more fat that those who sleep less.
159