Have you ever had a set of dumbbells and wondered what to do with them? Have you ever had half a set of dumbbells and wondered what to do with it? Believe it or not, dumbbells can be very versatile! In fact, the people who study this sort of thing are finding new revelations about how the amount of weight and the number of repetitions affects muscle development. So get excited about dumbbells by tuning in to this episode of Fitness Disrupted.

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