For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
There are about 1,400 different species of bacteria in your belly button.
10
Our Right Lungs takes more air than our left lung.
194
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46