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Master Your Fitness Game: In-Depth Gear Guides and Workout Tips by TuffWraps

More and more athletes are cross training to improve overall performance in their main sport. Some runners may be concerned that heavy strength training can produce too much muscle mass and hinder their speed. However, most studies show no adverse effects on aerobic power from heavy resistance exercise. Kraemer and colleagues reported that women who performed both resistance and aerobic endurance training had greater aerobic development than those who performed aerobic endurance training alone.

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