I am a 54 year old woman, and my muscles in my arms and legs are weak. I have no strength in them any longer. My legs will ache, both in my calves and thighs and knees, and I can not get up off the floor without help from a chair or something to pull up on. After sitting a while, my legs are weak to stand, and I have to use my arms on the chair to get up. My arms are so weak I cannot pick up my 25 lb grandbabie. This has been going on for the last year. I had a frozen shoulder taken care of, but my dr focused on the shoulder and never had much to say about my muscle pains and weakness. Can you give me any advice?