Your heart will pump about 212 million liters in its lifetime.
26
The human brain is more active during sleep than during the day.
28
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
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
You forget 90% of your dreams.
256
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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