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
Your heart will pump about 212 million liters in its lifetime.
26
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
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 every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
If you hold farts in during the day, they'll just come out when you sleep.
16