If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
Contrary to popular beliefs, chocolate does not cause acne.
63
It takes about 20 seconds for a red blood cell to circle the whole body.
102
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
Redheads require more anesthesia to 'go under' than other hair colors do.
50