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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.
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Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
![The conduction system of the heart; traces the path of the electrical impulse that stimulates the he](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_22_09_85202259.jpeg)
![If the valve clearance (lash) is not correct, loosen the retaining nut and turn the valve adjusting ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_4_38_43_29747128.png)