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
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
Early American humans hunted car-size armadillos and used their shells for houses.
12
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
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After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
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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