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The 4-Week Dumbbell Workout Plan Part 1: Chest And Back - GymGuider.com | Dumbbell workout plan, Dumbbell workout, Muscle building workouts
How many sets a week per body part should I do? Some people say 10-15 is enough and some say 20, some even say 25-30 sets. What is optimal for muscle growth? - Quora
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