How tight are your back muscles and do they get in the way of a good rotational backswing?

Perform this basic golf move and you will see right away.

If you're tight in this stretch, it will make sense to you as to why you are struggling with a flexible back swing.

Don't worry though...keep doing this stretch daily and you might find your body and your swing feels a lot better. 

It is one Justin Thomas likes when he is working on a good shoulder turn against a strong, stable lower body. 

Here's how you do it.

Place one foot back on a wall. Place a golf club across your chest. 

Now, rotate to one side and notice where your club is pointing for reference. Come back to the center. Repeat the motion 10 times to each side. 

You should be able to see a difference in your range of motion from your first repetition to your last. Also notice how far you can rotate in your backswing vs. your follow through.