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
The world's shortest man measures only 21.5 inches.
73
It takes approximately 12 hours for food to entirely digest.
93
On average a woman has 4 sexual partners in her lifetime.
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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.
35
The average sperm cell swims at 8 inches per hour.
4
You forget 90% of your dreams.
256