The average sperm cell swims at 8 inches per hour.
76
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The human brain has the capacity to store everything that you experience.
4k
Poor eyesight (myopia) is associated with higher IQ.
232
Your thumb is about the same size as your nose.
124
The human body contains over a billion miles of DNA.
147
Yawns are more contagious among people with closer relationships.
163
Your body is creating and killing about 2.4 million red blood cells per second.
17