Sex burns about 360 calories per hour.
860
The average person's skin weighs twice as much as their brain.
131
A hummingbird weighs less than a penny.
1k
Dieters who sleep more take off more fat that those who sleep less.
159
The earth is approx. 6,588,000,000,000,000,000 tons.
175
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
One human hair can support 3 ounces.
191