I think I was out of balance, but it was a lack of sodium not potassium. I started to eat a little iodized salt and within a day I felt much better and had more energy. I'm not sure that's the root cause; there's probably something wrong with my ability to digest certain foods. I eat lots of greens, especially kale and chard, coconut oil, avocados, beef, seafood and potatoes. I sometimes ruin it by eating too many M&Ms, but most of the time I stick to a fairly low-carb, high fat diet. Anyway I'm convinced that adding a little salt helped.