By Dr. G. John Mullen, Swimming World Contributor. We have all heard the core is essential for swimming. Some debate the amount of necessary core work for elite swimming performance.
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L-Sit: The Toughest Body Weight Core Exercise You're Not Doing Swimming World News
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L-Sit: The Toughest Body Weight Core Exercise You're Not Doing - Swimming World News
L-Sit: The Toughest Body Weight Core Exercise You're Not Doing Swimming World News
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