i have just started baleet dancing after 20 years and am realizing that my left side of my body is so weak compared to my right side. i have no balane or coordination on left side. My right is prefectly fine. I have numbness and tingling in my hands when I stregth my arm copletely out. I also have uncontrollable shaking in my hand in certin positions. If i didn't start dancing angain i don't think I would of notice this problem. just trying to understand what is going on.