An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The human brain doesn't stop developing until about 25 years old.
102
Obsessive nose picking is called Rhinotillexomania.
101
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
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
The average sperm cell swims at 8 inches per hour.
4
Your fingernails grow faster in summer.
744