Simply put, good posture means that each of your body parts is in the correct spot, relative to other body parts, and relative to the gravitational pull of the earth. Make sense? Can you do that? Great! Then we are done here. Ha! If only it were that easy.
What is your Good Posture?
When you read the words “good posture” you probably instinctively and immediately assumed your version of “good posture.” If you didn’t, then go ahead and straighten up now. What did you do to improve your posture? Did you thrust your chest up or did you pull your shoulders blades together? Perhaps both? Well, doing that may give the impression of good posture but more accurately all you did was lift your rib cage forward by sheering your vertebra and mashing your shoulder blades together. Doesn’t sound good, does it? When you are slouching forward, simply misaligning your ribs like this does not actually create the movement in your (thoracic) spine in the way that you think or feel that it does. All it does is take that slouching forward curve of your upper spine and tilt it into an upward position. The curve is still there, it is simply pointing in a different direction.
You see, many of us stand at least slightly lazily at all times, trying to conserve energy and feel relaxed. To do that we stand with our neck jutted out, our shoulders slumped, our rib cage collapsed, our weight shifted into one hip or the other (or thrust forward into both), and our feet flared out like a duck. Take a look down at your body, are you standing like that right now?