The human body contains over a billion miles of DNA.
147
You can't tickle yourself.
29
Your heart will pump about 212 million liters in its lifetime.
26
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
It takes about 20 seconds for a red blood cell to circle the whole body.
102
A human being loses an average of 40 to 100 strands of hair a day.
133
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24