Yawns are more contagious among people with closer relationships.
163
The average person's skin weighs twice as much as their brain.
131
Our Right Lungs takes more air than our left lung.
194
When you take a step, you are using up to 200 muscles.
886
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
The human body contains over a billion miles of DNA.
147
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
Enamel is hardest substance in the human body.
61