4-Week Fat Blasters I am currently on week 3 of this workout. And since I'm still slowing getting back into the workout scene its been a great starter! Its only 3 days a week but your suppose to be doing 30 minute of cardio 5 days a week on top of it. I'm doing Zumba for the Wii as my Cardio. If you have a compatible game console, Zumba Fitness Game is an absolute blast!!