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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If you hold farts in during the day, they'll just come out when you sleep.
16
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
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The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
The average sperm cell swims at 8 inches per hour.
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The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
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.
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