Core Row

Get into a pushup position while holding a pair of dumbbells with your feet shoulder-width apart. Keeping your body straight and without too much movement, row one dumbbell up until it touches your rib cage. Lower it back down, trying to set it as gently as possible on the floor. Repeat with the other dumbbell. Try to keep your feet in contact with the ground during the row, as the opposite foot tends to rise off the ground when the opposite arm rows the weight.

TIP: If this exercise is too difficult, use lighter weights and/or set your feet wider apart. When performed correctly, this exercise should look as if the only thing moving during the rowing sequence is your arm.