Place two kettlebells directly in front of your feet on the ground. Keep a slight bend in your knees and push your butt backwards as much as possible as you bend over in order to assume your starting position. Grab both of the kettlebells and pull them upwards, towards your stomach. You should be retracting your shoulder blades, flexing your elbows, and ensuring that you are keeping your back completely straight. Once in the top contracted position, pause briefly (squeezing your back muscles) before slowly lowering the kettlebells (with control) back to the starting position. Repeat for the prescribed number of repetitions.