An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Poor eyesight (myopia) is associated with higher IQ.
232
It takes about 20 seconds for a red blood cell to circle the whole body.
102
It takes approximately 12 hours for food to entirely digest.
93
You can't tickle yourself.
29
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307