Staying Fit-Endurance, or aerobic, activities increase your breathing and heart rate. They keep your heart, lungs, and circulatory system healthy and improve your overall fitness. Strength, or resistance training, exercises make your muscles stronger

Staying Fit-Endurance, or aerobic, activities increase your breathing and heart rate. They keep your heart, lungs, and circulatory system healthy and improve your overall fitness. Strength, or resistance training, exercises make your muscles stronger

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Stock photo: Staying Fit-Endurance, or aerobic, activities increase your breathing and heart rate. They keep your heart, lungs, and circulatory system healthy and improve your overall fitness. Strength, or resistance training, exercises make your muscles stronger was taken by simmons48 .