Human Body: Fact vs. Fiction

Human beings use only 10% of their brains.

The blood in your veins is blue.

There are more than 600 individual skeletal muscles and 206 bones in your body.

The dust around us is composed mostly of dead human skin cells.

You are taller at night than you are in the morning.

Our brains are more active when we sleep than when we are awake.

Your brain is the largest organ in your body.

The surface area of the lungs is roughly the same size as a tennis court.

There are about 10,000 miles of blood vessels inside the average human body.

Every 13 seconds, your body produces more new cells than there are people in the United States.

DNA is the blueprint for all living things. Humans and chimps have 96% of their DNA in common.

The acid in your stomach is strong enough to dissolve metal.