Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
You see your nose at all times, your brain just chooses to ignore it.
30
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
If your DNA was stretched out it would reach to the moon 6,000 times.
256
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
Your body is creating and killing about 2.4 million red blood cells per second.
17
Your thumb is about the same size as your nose.
124
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17