Improve Your Swing by Tracking Your Sternum's Position

This drill teaches you to monitor where your sternum is pointing during key parts of the swing. That may sound simple, but it gives you a very clear window into how your pivot is working. When your chest is organized correctly, your backswing tends to be deeper and more centered, your transition is cleaner, and your follow-through is more supported instead of being manufactured by your arms. If you tend to sway off the ball, shorten your backswing, scoop through impact, or finish with a chicken wing, tracking your sternum can help you fix the root cause rather than just the symptom.

How the Drill Works

The drill uses alignment sticks to give you a visual reference for your chest orientation. Instead of only thinking about your hands, club, or shoulders, you focus on the direction your sternum is facing at three important checkpoints: the top of the backswing, impact, and the follow-through.

The reason this matters is that your sternum reflects the quality of your pivot. If your chest points too far down at the top, you often lose depth and have to create the rest of the backswing by lifting your arms or bending your trail arm excessively. If your chest stays too far down through the follow-through, you often have to “help” the ball in the air with your hands and arms, which can lead to scooping, flipping, or a chicken wing.

In a sound motion, your sternum changes direction in a predictable way:

At setup, it starts angled down toward the ball.
At the top of the backswing, it should point roughly parallel to the ground.
Coming into impact, it returns to a more forward-facing orientation while your upper body stays behind your lower body.
In the follow-through, it should point just above the horizon, showing that your body is extending and rotating through the strike.

This is why the drill is so useful. It gives you simple body-position checkpoints that reveal whether your motion is being driven by a good pivot or by compensations from the arms.

Step-by-Step

Set up with a visual reference. Take one or two alignment sticks and hold or position one so it represents the direction your sternum is pointing. You are not using the stick to manipulate the club; you are using it to make your chest orientation easier to see and feel.
Start in your normal address posture. Assume your regular golf setup. Your sternum will naturally point down toward the ball because you are bent forward from the hips. This is your starting reference.
Make a backswing pivot to the top. Turn into your backswing without trying to lift the club with your arms. As you arrive at the top, check your sternum. It should be pointing roughly horizontal, or close to parallel with the ground.

If it points too far down, that usually means your upper body has not pivoted well enough. You may have swayed, stayed too flexed, or failed to create the blend of rotation, side bend, and extension needed for a full backswing.
Notice what a poor top position looks like. If your chest is aimed at the ground at the top, your backswing often becomes short and narrow. From there, the only way to get the club high enough is to bend your arms or lift them. That creates a backswing that looks complete, but it is not supported by a strong pivot.
Rehearse a more centered backswing. Make slower practice swings and feel that your upper body stays relatively centered while your torso turns. Let your trail side support the motion. As you do this correctly, your sternum will stop pointing straight down and start orienting more level to the ground.
Move into the early downswing. From the top, begin the transition and notice that your sternum will start to change orientation again. It should not immediately tip excessively upward. If it does, you are likely standing up too early, which is a common form of early extension.
Return to a solid impact relationship. As you approach impact, your chest should be more open than it was at address, but your upper body should still be positioned behind your lower body. You are not lunging on top of the ball with your chest, nor are you backing away from it. This is the braced, stable impact relationship many good players create.
Finish with the sternum above the horizon. Continue through to your follow-through and check the direction of your sternum. It should be pointing just above the horizon, not down at the ground. This shows that your body is extending through the strike instead of forcing the arms to do all the lifting.
Compare backswing and follow-through. A useful pattern is this: at the top, your sternum is around horizontal; through impact, it rotates and opens; in the follow-through, it points slightly upward. That progression tells you your pivot is carrying the swing.
Take the drill to the range. First rehearse these positions slowly at home without hitting balls. Then bring the same checkpoints into your range practice. You can make rehearsal swings between shots and confirm that your sternum is organized at the top and in the finish before hitting the next ball.

What You Should Feel

When you do this drill well, the biggest sensation is that your torso is creating the swing, not your arms. The chest, rib cage, and trunk feel like they are carrying the motion to the top and through to the finish.

At the Top of the Backswing

Your chest feels turned, not collapsed.
Your upper body feels relatively centered rather than swayed far off the ball.
Your sternum feels more level to the ground than most golfers expect.
Your arms feel supported by the pivot instead of having to lift independently.

Through Impact

Your lower body feels braced while your upper body stays behind it.
Your chest is opening, but you do not feel like you are standing up away from the ball too soon.
You feel rotation carrying the strike rather than a throw of the hands.

In the Follow-Through

Your chest feels tall and extended.
Your sternum feels as if it is pointing slightly upward, not down.
Your arms feel like they are riding along with the body’s motion instead of trying to lift the club on their own.
Your finish feels balanced and supported through the trunk and abdominal area.

A very useful checkpoint is this: if your sternum points down both at the top and in the follow-through, there is a good chance your arms are compensating in both directions. You may lift them going back and fold them through the ball to create height that your pivot never produced.

Common Mistakes to Avoid

Letting the sternum point too far down at the top. This often leads to a short backswing, arm lift, and excessive trail-arm bend.
Swaying the upper body off the ball. A sway can prevent a centered, functional turn and make it harder for the chest to organize correctly.
Trying to create backswing length with the arms. If the pivot is poor, the arms will often keep traveling to make up for it.
Tipping the sternum up too early in transition. This usually indicates early extension and loss of posture.
Driving the chest down through the follow-through. This can encourage scooping, flipping, or a chicken wing because the body never extends properly.
Confusing chest rotation with lunging forward. At impact, your chest should be opening, but your upper body should not crash on top of the ball.
Only checking impact and ignoring the top and finish. Many impact issues begin earlier in the swing, and the follow-through often reveals what really happened through the ball.
Doing the drill too fast. Slow rehearsals make it much easier to feel where your sternum is pointing and why.

How This Fits Your Swing

This drill is valuable because it connects several parts of the swing that golfers often treat separately. You might think you have a backswing problem, an impact problem, or a follow-through problem, but all three can be tied to the same issue: your pivot is not organizing your torso correctly.

At the top of the swing, sternum direction tells you whether you created a functional shoulder plane and torso turn. If your chest is too far down, you usually have not loaded the backswing efficiently. That affects everything that follows.

At impact, sternum direction helps you understand the relationship between your upper and lower body. Good players do not simply spin open or hang back randomly. Their chest is opening while their body remains organized enough to deliver the club with compression and stability.

In the follow-through, sternum direction shows whether your body kept supporting the motion after the strike. If the chest stays down, the arms often take over. If the chest extends and points above the horizon, the body is continuing to drive the motion.

In other words, this drill helps you build a swing where:

the backswing is powered by a better pivot,
the transition avoids early extension,
impact is more stable and less handsy, and
the finish reflects a body-driven release instead of an arm-driven one.

It also works especially well for golfers who struggle with:

Short backswings caused by poor torso organization
Arm lift replacing body turn
Scooping through impact
Chicken wing finishes
Early extension in transition
Upper-body sway in the backswing

The bigger lesson is that your sternum is a simple but powerful checkpoint. If you can train it to point in the right places at the top, through impact, and into the finish, you will usually clean up several swing faults at once. Rather than chasing individual arm positions, you are improving the engine of the motion: the way your torso pivots and supports the club.

Use the drill slowly, rehearse the checkpoints often, and let your chest orientation tell you whether your swing is being built by a solid pivot or by compensations. That makes it one of the clearest ways to improve both your mechanics and your ball striking.