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
A hummingbird weighs less than a penny.
1k
By weight, Bone is five times stronger than steel.
417
You burn 26 calories in a one minute kiss.
605
You burn more calories sleeping than you do watching television.
348
Most elephants weigh less than a blue whale's tongue.
442
The earth is approx. 6,588,000,000,000,000,000 tons.
175