Yes. First of all, you are making up for a structural deficit. It will not go away. Secondly, as you use your Posture Control Insoles™, you retrain and strengthen your muscles. A good golfer for example, plays by wrote (muscle memory). Muscle memory is created by repetition. Your postural muscles work the same way. If you quit wearing your Posture Control Insoles® you will return to your old pronation pattern.
