The human brain doesn't stop developing until about 25 years old.
102
Your thumb is about the same size as your nose.
124
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
A person can live without food for about a month, but only about a week without water.
156
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