By weight, Bone is five times stronger than steel.
417
One human hair can support 3 ounces.
191
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
You burn more calories sleeping than you do watching television.
348
The average person's skin weighs twice as much as their brain.
131
The elephant brain weighs about 6,000g.
274
A hummingbird weighs less than a penny.
1k
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19