Babies crawl an average of 200m a day.
212
The human brain is more active during sleep than during the day.
28
In one day, adult lungs move about 10,000 litres of air.
11
One human hair can support 3 ounces.
191
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13