There are other problems, too. For one thing, you can't use a lot of supplements during this diet. Creatine, for example. If you use creatine during the 5-day no-carb phase, then you will get a bad case of diarrhea. You have to ingest mega amounts of creatine only during the carbo loading phase. Your body, however, will be saturated with creatine for only a few days before your muscles start to deflate again.