A human being loses an average of 40 to 100 strands of hair a day.
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It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
The average sperm cell swims at 8 inches per hour.
4
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Drying your hands with paper towel will reduce the bacterial count by 45 - 60% on your hands. However, using a hand dryer will increase the bacteria on your hands by up to 255% because it blows out bacteria already living in the, conveniently, warm moist environment.
26