Enamel is hardest substance in the human body.
61
Our Right Lungs takes more air than our left lung.
194
The human brain doesn't stop developing until about 25 years old.
102
Poor eyesight (myopia) is associated with higher IQ.
232
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197