How you set up to the golf ball and the posture you take has a lot to do with how you swing the golf club.
Are You Bending Over Too Much in Your Stance?
I see a lot of golfers that bend over too much and have their head stuck down too much. The first question I ask them is 'Are you glasses bifocals?' Because if they are, it's hard for you to set up in any manner other than having your head stuck down in your chest too much. So if you use bifocals, you have to get some glasses that are sport specific so that you can set up to the golf ball with your head up.
It's important that you have your head up in address so that your shoulders have room to turn, if you're stuck down here with your head down in the ground. You're likely to get a tilt with your shoulders and a restricted turn.
The Proper Head Angle in a Golf Swing
Your head should be up more aligned with your spine, your rear end stuck out, your back fairly straight, and you are bent forward at angle at about 22 degrees. This is the posture that you can have at address that gives you the best chance to turn your shoulders correctly and make a good golf swing. Remember, head up, in line with your back and you’re going to have a lot better chance to making a good golf swing.