They might not be able to tell you why they are weak but they should test you for substances that get rid of the imbalance and cause the muscle to no longer fail. He/she should have some vials of substances there that they can use to find something to counteract the problem. If not then seek out an AK that does. There are really two parts to the AK visit. Diagnosis of the problem through muscle testing and then creating a regiment to counteract the problem, which is also done through muscle testing.