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
If the human eye was a digital camera, it would have 576 megapixels.
25
On average, there's 100 billion neurons in the human brain.
83
The human brain doesn't stop developing until about 25 years old.
102
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
You forget 90% of your dreams.
256
Gorillas can catch human colds and other illnesses.
205