Why Do Runners Have Lean Muscles

Why Do Runners Have Lean Muscles

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Why Do Runners Have Lean Muscles

Everywhere. Need Help?. Increase lean muscle mass and you'll perform, look and feel better. Why?. Sabrina Grotewold is the running editor for active.com.
Maybe the reason a marathon runner is so skinny and doesn't have any muscle is because they're not trying to build any muscle and they don't have much .
Since then, athletes have become bigger, stronger, leaner, and more specialized. Muscle quality is a broad measure of the relative amount of connective and .

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