20-Minute Muscle
Build total-body muscle and strength with a single set of dumbbells in these 20-minute supersets-and-circuit workouts from functional fitness expert Mat Forzaglia.
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20-Minute Muscle: Chest
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20-Minute Muscle: Legs
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20-Minute Muscle: Back and Biceps
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20-Minute Muscle: Shoulders and Core
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20-Minute Muscle: Arms