The average person's skin weighs twice as much as their brain.
131
Your thumb is about the same size as your nose.
124
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Enamel is hardest substance in the human body.
61
Chewing gum boosts your brain power.
285
Every year your body replaces 98% of your atoms.
119