Kamao, don't workout during your carb up days. Workout just before starting it and you can do cardio a the end of it (let's say you carb-up saturday and sunday, saturday morning do a work-out and sunday night, cardio). The point of the carb-up days is to refull your glycogen, by working out you do the opposite. Good luck on the diet man, it's the best!

BurGy