Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
When you take a step, you are using up to 200 muscles.
885
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
The human brain doesn't stop developing until about 25 years old.
102
Your body is creating and killing about 2.4 million red blood cells per second.
17
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
The average sperm cell swims at 8 inches per hour.
76
Every year your body replaces 98% of your atoms.
119