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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Did you know?
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.