Also, I went through this the first time around ..... I had to sleep with a bowl of heavily salted warm water and a flannel on my bedside cabinet so when the calf cramps woke me up in agony I'd slap the salt water laden flannel on my calf - instant relief. I actually thought it was a result of the high water/low sodium vlcd situation - but I don't actually know for sure. The cramps went away, and I'm totally crap free this time around (2 years later, 27 days in) Ask your counselor? Stick with the diet religiously, and any concerns go to the CWP website? best of luck!