High Intensity Interval Training is a form of interval training, a cardiovascular exercise strategy alternating short periods of intense anaerobic exercise with less intense recovery periods, until too exhausted to continue. 9 H.I.I.T infuses quadrupedal and ground based movement from disciplines like Yoga and Animal Flow to maximize flexibility, mobility, and durability. 


Infusion is the introduction of muscle harmonizing movements that increase muscular control. Nine trainers infuse HIIT workouts with quadrupedal (ground based) movements from Yoga, Animal Flow, and other disciplines to increase muscle mobility, flexibility, and durability.  Nine believes that Niners should have muscles that work in harmony to increase functionality.