When many people think of “working out,” the image of someone curling a dumbbell is likely to be what they see in their mind’s eye. What’s unlikely is that image being of someone curling aquatic ...

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Although the term "dumbbell" wasn't created until the early 1700s, humans have been using heavy, handheld objects for fitness and sport since 500 B.C. As long as the dumbbell has been around, there ...