Toni has a history of shoulder dislocation. The weakness and muscle firing delay shows up when lifting his left leg while doing a plank on the half round. He notes how he really has to focus on core strength to compensate for the left shoulder in order to create the stability. Ten minutes later after a treatment by Dr. Noble Toni is able to perform the task without compensation of his core as he notes in the second part of the video. These changes occur instantly and are lasting with no further treatment required.