It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
You see your nose at all times, your brain just chooses to ignore it.
30
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269