An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
The human brain is more active during sleep than during the day.
28
Babies crawl an average of 200m a day.
212
The human body contains over a billion miles of DNA.
147
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The human eye blinks an average of 4,200,000 times a year.
233
You can't tickle yourself.
29
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132