Check out this casual, beginner level, stability ball workout. The main focus is to tighten and tone your midsection and backside. This 15-minute workout is also ideal for recovery day core work. You will need a stability ball to complete the workout so get yourself set up before you hit PLAY!Do you have a fitness resolution? Make progress towards achieving your goals with Skimble’s top fitness apps and supportive community. If you’re new to Skimble, our Workout of the Week challenges offer you fresh ways to be fit. Download Workout Trainer on your Android & Apple devices and do your first workout! Remember, if you want to stay up-to-date with our Workout of the Week challenges, be sure to have your Workout Trainer notifications turned ON in the app!