Once a golfer is in the midst of his 18-hole round he usually gives little thought to the idea of stretching as the match is in progress. However, over the course of a 4 1/2 hour round of golf, there are many opportunities for delays and for the back, legs or shoulders to stiffen. This is especially true in the colder months of the year. If a golfer is taking a cart and hits a bit of a backup waiting to hit off the tee or to the green, muscles can stiffen. Here's how to keep them pliable.