Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
You can't tickle yourself.
29
The human body contains over a billion miles of DNA.
147
Your fingernails grow faster in summer.
744
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Every human spent about half an hour as a single cell.
144
A human being loses an average of 40 to 100 strands of hair a day.
133
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161