Watch 30 Minutes to Fitness Abs & Core (1970) : Full Movie Online Free This DVD has two 30 minute workouts that are packed with effective abdominal and core moves from start to finish! Whether you do the complete 30 minute workouts or simply choose to do a 10 minute segment, you will strengthen your abs, trim your waistline and truly improve your overall core function. The exercises included are standing waistline moves, plank work training and various effective sit up variations all targeting the core area. Abs & Core attacks your midsection from all angles to get you real results faster! It's time to stop doing sit ups that are ineffective and harmful to your back and start using Abs & Core.