I've been waking up with extreme charlie horse type of cramp in my outer tendon above my ankle. It's the same time every time it happens, and I've been trying to eat more bananas. The only way it eases up is to run out to the kitchen and take a swig of yellow mustard. A friend said that when you have a muscle cramp, to ingest a tsp. of mustard. It still takes walking it off back into the bedroom, and massaging it, plus a little wimpering, but it goes away. Not sure if it's potassium related or possibly a female thing.
Getting back to the mustard, she said a nurse had given her the info, like a mid-wive's thing that they used to give it to women in labor to ease the pain of cramping in contractions.