Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
The human brain has the capacity to store everything that you experience.
4k
The average sperm cell swims at 8 inches per hour.
76
It takes about 20 seconds for a red blood cell to circle the whole body.
102
The human brain doesn't stop developing until about 25 years old.
102
Enamel is hardest substance in the human body.
61
Poor eyesight (myopia) is associated with higher IQ.
232