Here is a simple stretch to help your back and shoulders. In Yoga, it is called a Child's Pose. It is very relaxing to do and is a good way to stretch after your round of golf.
Sit on your knees on the floor.
Lean forward from your waist and stretch both arms away from your head, placing your forehead and palms on the floor.
Extend your arms out away from your body and hold position for 8 to 10 counts.