Core Strength: What Is It? Insufficient deep belly breaths with an emphasis on filling the base/full 360-degree core are a common problem in our society. Prior to air entering the upper chest and lungs, the lower rib cage should be expanding. Many people only sometimes breathe deeply, relying solely on upper chest breathing to get them through the most of their waking hours. Taking a Breath Work with your breath first before doing any of the exercises below. Take a fairly thick string (like a shoestring) and cross it over your navel as you wrap it around your waist (much … Continue reading Core Strength Workout Exercises for Beginners