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
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
The world's shortest man measures only 21.5 inches.
73
By weight, Bone is five times stronger than steel.
417
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Human hair and fingernails continue to grow after death.
7