Apple Cider Vinegar for Leg Cramps

I have been having painful leg cramps, particularly at night, for years. I had tried just about everything and decided to try drinking apple cider vinegar, about a tablespoonful, just before bed and on rising. The cramps disappeared. I took this for a couple of months and then stopped. I haven't had any cramps since. I like sour things so I could take it straight but you could add honey and a little water.