Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
Your heart will pump about 212 million liters in its lifetime.
26
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89