Everyone wants six-pack abs. A visible rectus abdominis is a sign that you’re fit and training hard. Sets of endless crunches and a strict diet will help those muscles pop. But you’ll get even greater results by working the hidden muscles underneath, and with that added strength, you’ll also boost your core stability, posture, and prevent future injuries.
The hidden muscles I’m talking about are your transverse abdominis and inner obliques. These actually wrap all the way around your body and attach to your thoracolumbar fascia (the thick layer of connective tissue at the back of the trunk). Think of them as a girdle that pulls in your waist and provides stability to help keep your body in alignment. Without them you wouldn’t be able to maintain an upright posture or squat or lunge correctly. If they aren’t working properly, you see the effects in your posture, which eventually leads to pain or injury.
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