Enamel is hardest substance in the human body.
61
There are about 255 babies born worldwide every minute.
46
It takes about 20 seconds for a red blood cell to circle the whole body.
102
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
The human brain uses approximately as much energy as a 10 watt light bulb.
120
The human body contains over a billion miles of DNA.
147
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18