Ideal ways to break up your practice sessions should include activities that involve extension of your back and upper torso, chin tuck exercises, stretches of the glutes and lateral trunk muscles, and even some muscle activation exercises for the deep abdominal and shoulder blade stabilising muscles.
Breaking up your practice sessions is very important to prevent injury. Long sessions on the practice tee, or putting green, involve extended periods of forward flexion, which can place excessive amounts of stress through the structures in your spine, including the joints, ligaments, muscles and discs. Unlike during a round of golf, when you walk between shots that will decrease the stress through your back, while you are practicing you do not get this break. By breaking up your practice sessions with periods that give your spine some respite from this forward flexed posture, you can reduce the load on your spine and help prevent injury.