Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Babies crawl an average of 200m a day.
212
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The largest cell in the human body is the female egg and the smallest is the male sperm.
682