The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
By weight, Bone is five times stronger than steel.
417
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
If you unfolded your brain, it would cover an ironing board.
42
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
Ingrown toenails are hereditary.
15
The Internal Revenue Service audits 87 percent of women who claim breast implants as tax deductions.
54
Every year your body replaces 98% of your atoms.
119