Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
There's 100 trillion good bacteria living in your body.
17
One human hair can support 3 ounces.
191
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
The human sigh acts as a physiological reset button.
23
The human brain doesn't stop developing until about 25 years old.
102