It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
The average sperm cell swims at 8 inches per hour.
76
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
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
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
