So I am really almost weak. My upper body and legs could use A LOT of work. I ride a ton, but I need to work my muscles more. I have a strong core, but my arms and lower legs and a little bit of my upper legs are pretty darn weak. :/ any simple exersizes that I can do to help that? ( I can't run per my doctor's orders)
Also any stretches I can do to limber up for riding?