Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Yawns are more contagious among people with closer relationships.
163
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346