The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Gin is a mild diuretic which helps the body get rid of excessive fluid. Thus, it can reduce problems such as menstrual bloating.
90
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22