For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The human brain doesn't stop developing until about 25 years old.
102
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
The human sigh acts as a physiological reset button.
23
Our Right Lungs takes more air than our left lung.
194
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
One human hair can support 3 ounces.
191