The human brain is more active during sleep than during the day.
28
Pain occurs when sounds are above 130 db.
123
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
35
Enamel is hardest substance in the human body.
61
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
The average sperm cell swims at 8 inches per hour.
4
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