Take the center of the resistance tube around the back of your chair. Hold one end in each hand and sit at the front edge of your chair. Place your hands next to your shoulders, elbows out at the side and your wrists in neutral position with the palms facing the floor. Sit up tall, with your abdominals held in tight.

Squeeze your chest muscles and push your arms forward, keeping them in line with the shoulders. Slowly release back to the starting position. Release the tube very gently -- letting go suddenly can cause injury.

Do 12-16 repetitions, rest and repeat.