Your thumb is about the same size as your nose.
124
One human hair can support 3 ounces.
191
Enamel is hardest substance in the human body.
61
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Your heart will pump about 212 million liters in its lifetime.
26
The human brain uses approximately as much energy as a 10 watt light bulb.
120