The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Your body is creating and killing about 2.4 million red blood cells per second.
17
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
Within three days of death, the enzymes that once digested your food begin to eat you.
22
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
