The human sigh acts as a physiological reset button.
23
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Your fingernails grow faster in summer.
744
Our brains have a negativity bias and will remember bad memories more than good ones.
15
A human being loses an average of 40 to 100 strands of hair a day.
133
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130