If you hold farts in during the day, they'll just come out when you sleep.
16
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
There are about 1,400 different species of bacteria in your belly button.
10
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The human brain uses approximately as much energy as a 10 watt light bulb.
120
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