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.
266
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
Pain travels through the body at 350 feet per second!
23
Human teeth are almost as hard as rocks!
47
People who sleep late have more mental stamina and can outperform early risers.
33
The human brain is insensitive to pain.
76