Are you ready to hate the number 20?! In this session, you’ll be working on your core muscles with some sporadic cardio bursts scattered throughout. You will be testing your strength and endurance in this 20 reps/20 secs format. Let’s get ready to flip the core.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!