When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
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Fingernails grow nearly 4 times faster than toenails.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
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A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15
The average person's skin weighs twice as much as their brain.
131
Gardening is said to be one of the best exercises for maintaining healthy bones.
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