The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
The human body contains over a billion miles of DNA.
147
When you take a step, you are using up to 200 muscles.
886
Your thumb is about the same size as your nose.
124
The average sperm cell swims at 8 inches per hour.
76
Every year your body replaces 98% of your atoms.
119