You will notice the difference immediately. People differ in the length of time it takes their muscles to re-posture, but you should expect to feel the full benefits of the Posture Control InsolesĀ® in 7- 10 days provided you wear them full time in all your shoes. If you only wear them a little now and then, you may barely feel any benefits at all. As you use your Posture Control InsolesĀ®, 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.