I have found a few key strategies through Pilates: First, I think about my posture more. Awareness is the first step.
Next, I stand or sit up straight with my ears lined up over my shoulders. This creates proper head positioning and helps with opening up the chest. Then I pull my shoulder blades toward each across my back. AHHHH! Feels better already.
Practicing the #ClassicalPilates Method will improve strength and flexibility so that all of the above feels natural all the time!