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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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.
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A human being loses an average of 40 to 100 strands of hair a day.
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Every human spent about half an hour as a single cell.
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Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
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Our eyes are always the same size from birth, but our nose and ears never stop growing.
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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
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