Weak or spastic muscles can be due to many causes. For example tight or spasmy muscles in stroke patients can be due to interference with the descending inhibition signals from the brain. That can be somewhat mitigated by using FSM to increase secretions in the spinal chord. I have done that to myself and it did help even more than needling the muscle itself which usually does help too. If it is not due to a stroke, then acupuncture or electroacupuncture works best. Now weak muscles are usually from a damaged or inflamed nerve. So the key is finding where. Then the best approach is to use my ant inflammation electroacupuncture treatment.Sometimes it can be from poor blood supply not providing enough nutrition to the cells. Acupuncture can dilate the blood vessels and microcurrent treatment can increase production of ATP in the cells by 500%. ATP is the molecule the cells use for energy. Sometimes an imbalance in the macro-minerals can cause problems so you have to ask about diet and whether they are on heart medicine that might mess up their potassium.