Yawns are more contagious among people with closer relationships.
163
The average person's skin weighs twice as much as their brain.
131
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59
Every year your body replaces 98% of your atoms.
119
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
Your heart will pump about 212 million liters in its lifetime.
26
One human hair can support 3 ounces.
191