Connect a resistance band to the workout bar and attach the other end to a D-ring on an ankle strap. Do the same for a pair of resistance bands. Grab the workout bar with slightly wider than shoulder width using an overhand grip and position the bar on back of shoulders.
Rotate your torso 90° to one side of the body hold for a few seconds and the return to the original position. Repeat with the opposite side.
Don't twist the legs while performing the rotation, the torso should be the only part of the body that rotates.