During menstruation, the sensitivity of a woman's middle finger is reduced.
47
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
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
35,000 people in the U.S. will die from the flu annually.
6
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Every day, the average person swallows about a quart of mucous.
5
It is almost impossible to sneeze with your eyes open. It is a defense mechanism that has evolved to protect our eyes from bacteria and debris.
164