RC03 – Optimum HIIT Cardio Training – 102 – Course Structure You must first complete RC03 – Optimum HIIT Cardio Training – 101 – Welcome before viewing this LessonPlease sign up for the course before starting the lesson. HIIT Cardio -102-Course Structure RC03 - Optimum HIIT Cardio Training - 103 - Registration RC03 - Optimum HIIT Cardio Training - 201 - Specifics: Introduction Back to: RC03 – Optimum HIIT Cardio Training > HIIT Cardio 1