There are many advantages to using the core muscles correctly throughout the golf swing. One of the biggest advantages is distance and as closely followed by consistency. Those two things don't normally go hand in hand, but as far as using the core muscles they really do work very, very well together. Basically speaking the consistency standpoint of using the core muscles correctly will allow you to have more stability throughout the swing. So by turning the body correctly, by getting into good position, by stimulating those core muscles, it will allow you to have lot more strength over the ball.
From a power perspective, turning and properly using the core muscles will allow you to generate more club head speed. That is because the core, the center of your swing, you can control the turning motions of those body parts simply because they're moving at slower speed. If you think about it, the middle of a bike wheel turns much slower than the outside of the wheel. Keep that thought within your head, because that's what we're going to be doing here. We're going to be turning the inner wheel, we're going to be turning the core and as a result that's going to lead to the outer wheel the club head travelling much faster throughout the swing.
Now generally speaking we'll just show the easiest way to think about using the core muscles is to get yourself setup in a nice strong position and posture. So tilt it over the ball that little bit of knee flex, spine angle over. And on the way back if you focus on the center of the chest and the top of the stomach — center of the chest and top of the stomach and on the way back you feel you're rotating that away from the ball. So on the way through you'll — turn the way back you're rotating just the top of your stomach away from the ball and you're turning it as much as you can.
That's a rotation of the core muscles and it's a rotation of the body around the spine angle. As you're then moving through the ball, if you focus on getting the weight shifting left and then again top of the stomach turning through and rotating through the ball. Just by focusing on the very center of the body, by focusing on those turning positions you can have a consistency of speed and you can have a consistency of power. Because you're controlling the whole technique, your controlling the amount of power that you're using from a single point. The center of your swing, the center of your body using your core properly. So that's just a very small way in how you can use your core more effectively and the advantages that it can give.