A fetus develops fingerprints at eighteen weeks!
32
Foreign accent syndrome is a rare brain disorder which causes people to speak in a foreign accent involuntarily.
15
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Lack of water is the #1 trigger of daytime fatigue.
148
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
About 400 different kinds of microbes live on and in the human body.
-3
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
Ingrown toenails are hereditary.
15