From http://www.workoutz.com/exercise/Double-Wave-With-Heavy-Training-Rope
In this video, we demonstrate the basic "double wave" using a battling rope. This exercise can be used for cardiovascular conditioning, which means that it primarily works the heart in the same way that a treadmill or stationary bicycle does. Whoever thought that fluffing a bed sheet or undoing the kink in a water hose would be come an exercise?
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