30-minute high-intensity interval training (HIIT) workout, designed to improve strength and build lean muscle. ‎This workout uses barbell, weight plate and body weight exercises to blast all major muscle groups. LES MILLS ‎GRIT Strength takes cutting edge HIIT and combines it with powerful music and inspirational coaches who will ‎be down on the floor with you, motivating you to go harder to get fit fast.‎