Underground Gym is shaking up the class scene with a new series of Group X Sessions and the 1st one to drop is 'Relentless'! 'Relentless' is based on 3 minute blocks broken down into 6 x 30 seconds targeting the whole body using Spin, Kettlebells and body weight as the main culprits! Join us as we Push, Pull, Squat, Jump, Ride and Swing! Now is the TIME to get RELENTLESS with your TRAINING!