Pain and Exercise

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Hi all, I was diagnosed with a neuropathy this time last year. Since then I've struggled to much in the way of exercise because of almost constant pain or resultant pain and rapid exhaustion. I was a very keen hill walker but now am limited to low level or flat walking. I was a keen swimmer but have osteoarthritis in my neck, which can make swimming painful. I suffer weakness in my wrists at times because of the neuropathy and my balance can be erratic. Has anyone got any suggestions for exercise I could try?