The human brain doesn't stop developing until about 25 years old.
102
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
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
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The average person's skin weighs twice as much as their brain.
131
A person can live without food for about a month, but only about a week without water.
156