I have intestinal candida, and the reason I get die-off from exercise is because of your 2nd point up there - it oxygenates my body. I like to do the exercise bike because then the oxygen is targeted at my abdominal section, which as you all know is where the intestinal track is. I do not get the same benefits from running as I do from biking because then the oxygen is not targeted at my lower body. Oxygen is unlike any "antifungal" that is used against candida; therefore, it cannot adapt to it, making it an ideal way of dealing with a yeast infection.