I have seen the effects of varying amounts and types of exercise, different diets, and different sleep patterns. At one point I even cut out all processed sugar, as much natural sugar as possible, even bread, and all caffeine. That had helped a little bit but the only reason I was able to do it was because I was not in school and unemployed which is not the case now. Some of my warning signs I have figured out but can do nothing about, especially irritation. I haven't had to call in sick to work for any mood changes but have turned down plans. Trust me, I have asked myself all of these questions already, going around and around in circles trying to decide.