Thanks for that article. I think I found the answer at the bottom. I am taking extra potassium but I have just lately increased my water by about 40 oz. usually drunk in the morning. For example this morning alone I drank 80 oz. and again was tired this afternoon. I will either need to decrease my water in the morning or increase more potassium. I also got another answer from that article. If you search my posts, I had posted early on that I was getting cramps. They went away without me noticing the solution, it was the fact that I added potassium. I will definatly try less water tomorrow and it may not help right away so I will try for a couple days.