Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The human brain uses approximately as much energy as a 10 watt light bulb.
120
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Enamel is hardest substance in the human body.
61
Your thumb is about the same size as your nose.
124
Your heart will pump about 212 million liters in its lifetime.
26
Every year your body replaces 98% of your atoms.
119