One of the easiest ways to improve your golf game is to improve your overall fitness. By improving your endurance, you can play a full 18 holes without worrying about fatigue. And, by improving your muscular strength, you'll see longer drives and a stronger ability to target chip shots and putts. Increased fitness will also minimize the potential for injury while playing.
Walk more. You can incorporate more walking into things you do every day. For example, if you regularly search for parking spot closest to the store entrance, instead park farther away. Walking not only improves your endurance but also enables you to stride with more confidence when walking the course.
Use your TV time productively. Instead of fast-forwarding through the ads, do some easy exercises during the commercials. Complete a set of abdominal crunches to strengthen your core during the first series of advertisements. During the next set of commercials, practice the "wood chopper," an exercise designed to strengthen the obliques and core, critical to a good golf swing. Sit down at the edge of a chair or on an exercise ball with your feet wide apart, clasp your hands and lean forward to touch one toe with your clasped hands. Then swing your arms and clasped hands across your body and up, ending with your arms extended above your shoulder and rotating to that side as much as possible. Repeat 10 to 15 times and then switch sides.
Use your wait times productively. For example, if you're standing in line at the grocery store, practice sucking in your abdomen to further strengthen your core. Pull in your abdomen as if you're pulling your belly button to your spine. Hold for 15 counts and release. Do as many as you can until it's your turn with the cashier.
Strengthen your legs while you talk on the phone. Strong legs stabilize your body while you play golf, as well as make it easier for you to walk for all 18 holes. While holding for a customer service representative, do a series of squats. Bend your knees and sit back, as if you're about to sit on a chair, and then stand back up. Make sure that your knees don't extend in front of your toes. Do as many as you can; try for sets of 15 at a time.
Practice sitting with perfect posture while driving to strengthen your core. A strong core not only lessens the risk of injury when golfing but it also makes your golf game easier. Sitting with your shoulders back, head held high and abdomen in will help keep your spine stabilized and your core strong.
Use canned foods to your advantage. If you're cooking, grab a few soup cans to pump out some bicep exercises; strong biceps help power your stroke and enable longer chip shots with greater accuracy. Hold a can in each hand, hands facing forward. Extend your arms down fully so that they are next to your upper thighs, then bend your arms and lift the cans to your shoulders, keeping your elbows at your sides. The cans may be light, but if you focus on squeezing your biceps, this can be a very productive workout.