NEW YORK (Reuters Health) - "Sit up straight -- you'll hurt your back," Mom always said. It turns out Mom was wrong, according to a new study that found sitting in an upright 90-degree position places ...
Core muscles wrap around the midsection like a girdle, forming a connecting link between the upper and lower body. They support, stabilize, and help move your spine, trunk, and pelvis, and most body ...
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