Your thumb is about the same size as your nose.
124
The average person's skin weighs twice as much as their brain.
131
The human body contains over a billion miles of DNA.
147
There's 100 trillion good bacteria living in your body.
17
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
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