An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
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
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
The human brain is more active during sleep than during the day.
28
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Yawns are more contagious among people with closer relationships.
163
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346