i will go further and say, it sounds like a hoax. a skit. a comedy
of errors. If any of it is in fact serious, (and more than a figment of imagination) then it's seriously probably in the wrong forum. Water Fasting has nothing to do with calories, or fiber... or fixated plans to punish the body with fitness training.
edit:
sorry to be the voice of 'no encouragement'. Your plan sounds ill-advised. Playing a lot of sports doesn't really fit the picture of a water fast.