Your stance varies with the type of shot you’re attempting.
You’ll have a wider stance, just beyond shoulder width, when you’re using your driver, and a narrow stance for putting or wedge shots.
Regardless of width, the basic stance begins with both feet pointed forward, perpendicular the “target line,” which is the imaginary line stretching between the ball and where you want the golf ball to go.
Then there’s foot flare. From the initial set up, you can decide if you want to angle your left foot slightly outward to clear the way for your follow through.
Some people flare their right foot as well, though this can have a negative impact on the power delivered.
Already, before you’ve even raised the club, the position of your feet is dictating the direction of your swing, the arc of your follow through, and the maximum force you’ll be able to apply.
But this isn’t where their influence ends.