It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
The average person's skin weighs twice as much as their brain.
131
Enamel is hardest substance in the human body.
61
When you take a step, you are using up to 200 muscles.
886
The average sperm cell swims at 8 inches per hour.
76
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
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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