Your heart will pump about 212 million liters in its lifetime.
26
Your fingernails grow faster in summer.
744
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
The average sperm cell swims at 8 inches per hour.
4
Every human spent about half an hour as a single cell.
144