It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Every year your body replaces 98% of your atoms.
119
Chewing gum boosts your brain power.
285
The average person's skin weighs twice as much as their brain.
131
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
The average sperm cell swims at 8 inches per hour.
76
The human body contains over a billion miles of DNA.
147
Poor eyesight (myopia) is associated with higher IQ.
232