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
Obsessive nose picking is called Rhinotillexomania.
101
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The human brain doesn't stop developing until about 25 years old.
102
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
A human being loses an average of 40 to 100 strands of hair a day.
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