Enamel is hardest substance in the human body.
61
Every year your body replaces 98% of your atoms.
119
When you take a step, you are using up to 200 muscles.
886
Your thumb is about the same size as your nose.
124
The human brain has the capacity to store everything that you experience.
4k
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190