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Epinephrine and exercise

This animation shows the release of epinephrine and its effect of the heart.

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Human Growth Hormone for Fitness and Stamina in Men

A look at whether the health and fitness benefits of human growth hormone (hGH) are proven and safe.

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Adjusting Your Diet to Gain More Energy

Helpful tips on how to adjust healthful meals and snacks to prevent fatigue.

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Abdominal ball raise with fitness ball

You can do many exercises with a fitness ball. See the abdominal ball raise.

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Abdominal crunch

The abdominal crunch is a classic core-strength exercise. See how it's done.

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Abdominal crunch with fitness ball

You can do many core exercises with a fitness ball. See the abdominal crunch.

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