Your thumb is about the same size as your nose.
124
The human body contains over a billion miles of DNA.
147
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
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 has the capacity to store everything that you experience.
4k
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
Poor eyesight (myopia) is associated with higher IQ.
232