Yawns are more contagious among people with closer relationships.
163
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
All 13 minerals necessary for human life can be found in alcohol beverages.
282
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
You can't tickle yourself.
29
A person can live without food for about a month, but only about a week without water.
156
The average person's skin weighs twice as much as their brain.
131