The average sperm cell swims at 8 inches per hour.
76
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
The average person's skin weighs twice as much as their brain.
131
If you hold farts in during the day, they'll just come out when you sleep.
16
There's 100 trillion good bacteria living in your body.
17
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111

