This pic of Jenn A., Cathe and Jenn D. was taken during the filming of STEP BOSS IMAX 4. This is the shortest of the STEP BOSS regular workouts coming in at about 45 minutes. IMAX 4 is our fourth IMAX video and like the previous IMAX workouts you will do several mini combos each followed by a high-intensity blast. All of the blasts in IMAX 4 are low impact.
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