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No matter how you feel about strength training, neglecting core work is a serious no-no! When your ab and back muscles are equally strong, they work together to support your entire body in almost every activity, from running to gardening. This quick core challenge works your abs from all angles and targets the back and glutes, too. Get ready to feel the burn in your core, which we think is a great thing. POPSUGAR Fitness offers fresh fitness tutorials, workouts, and exercises that will help you on your roa
