Squeeze your glutes and lift your left arm and right leg up as far as you can. Assume a push-up position with your hands on ...

Slightly adjusting your execution on dumbbell rows could make all the difference in which back muscles you develop.

You may not see this exact variation performed in the gym as often, but it can completely transform your back. Most people at the gym use a closer grip on cable rows, which primarily hits the midback.

Sit in a lat pulldown station and grab the bar above with a grip slightly wider than shoulder-width. Tighten your core and keep your torso upright. Pull the bar down toward your chest, bending at your ...