Dumbbell rows involve a host of back muscles ... Both moves are simple: You hang from a bar, with an overhand grip (pull-ups) or an underhand grip (chin-ups), and pull your chest to the bar.

Dumbbell rows involve a host of back muscles ... Both moves are simple: You hang from a bar, with an overhand grip (pull-ups) or an underhand grip (chin-ups), and pull your chest to the bar.

How to Do It: Wrap the towel around the handle of the dumbbell. Grab the towel with an overhand grip and position yourself to row, hinged at the waist with your free arm leaning against the top of ...