It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The average person's skin weighs twice as much as their brain.
131
Your thumb is about the same size as your nose.
124
Poor eyesight (myopia) is associated with higher IQ.
232
Yawns are more contagious among people with closer relationships.
163
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