An effective golf swing requires the ability to reach out and roll your shoulders, according to Jenni Martin, LPGA member and TPI-certified medical and golf professional. Martin points out that sitting at a desk like I do all day impedes that ability. Here's a stretch she recommends for regaining flexibility in your shoulders and lats.
While on your knees, reach out over a medicine ball. Feel the stretch in the front, sides and back of your upper arms and back. Hold this stretch for 5 seconds and then slowly roll to the left, holding for another 5 seconds. Now roll to the right side, maintaining the feeling of a full stretch. Repeat this series 4 times. Do this great stretch daily for additional width in your swing.
"The lack of shoulder flexibility can cause lose of distance off the tee," Martin says. "Flexible shoulders and back create swing 'width' and width equals speed and more distance."
Martin works in Sacramento, where she uses here LPGA teaching background, TPI training, and orthopedic knowledge (she's a DC as well) to help players of all levels improve their games physically and mentally.
Among many other books, Dave Donelson is the author of Weird Golf: 18 tales of fantastic, horrific, scientifically impossible, and morally reprehensible golf