I'm writing this because so many of you commented that you or your spouse also suffered from leg cramps. I hope this information helps someone.
I have been taking a prescription potassium supplement and using the magnesium oil I bought at Whole Foods for two weeks now. Although I have tried to drink more water during the day, I am not pushing it to extremes like I did in the first few days. I do drink Pellegrino with dinner, and most nights consume most of a liter. I only stretch lightly when I think of it, and that is not often.
I've had new blood tests that are showing good levels of potassium and magnesium. They were low before. Apparently all the avocados and other high in potassium things I have been eating, and the magnesium in my Cal-Mag were not enough. (Avocados have more potassium than bananas.)
It is difficult to describe how different I feel. Until I relaxed, I didn't know I was tense. I do know I was afraid to turn or change my leg positions in bed because if I did I was likely to set off a cramp. I often had what I can only describe as a "jangly feeling" in my entire body: a slightly nervous feeling.
I have been fighting sleeplessness for a long time, and would often have to get up to walk out cramps in my feet or legs several times a night. I would also visit the bathroom, but that was just because I was up already.
I have not had a cramp for ten days. I have been falling asleep much quicker than before, and only waking once to go potty, and then falling back asleep easily.
My whole body feels calm, no more jangly feeling.
My mood is better because I am more rested.
I can turn over in bed without worry about setting off a cramp and my feet and legs are relaxed. There has also been an improvement in my Restless Legs Syndrome, but that comes and goes so I don't know if it is related.
One negative: I have gained three pounds in one week. This may be because I am now "hydrated" as opposed to being "dehydrated."
I can live with a gain of three pounds if it means no more cramps, but have to be careful not to gain any more. Weight gain is not supposed to be a side effect of taking either of these minerals.
Only one more point. For me, this is the first time a doctor has taken this problem seriously. I guess it took a trip to the ER. If you get leg cramps, insist you get a blood test for potassium and magnesium. It sure has made a difference in the quality of my life.