There's 100 trillion good bacteria living in your body.
17
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
The human sigh acts as a physiological reset button.
23
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Held in farts enter your bloodstream and are bad for your body.
26