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:max_bytes(200000):strip_icc()/The-Ultimate-30-Day-Plank-Challenge-for-Your-Strongest-Core-Ever--0b698f248c434591b4e592703c01fb67.jpeg "This 30-Day Plank Challenge Will Strengthen Your Entire Core")
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:max_bytes(200000):strip_icc()/800_day-3-extended-arm-plank-f807706cd7014fb592ae89615e92ffe4.jpg "This 30-Day Plank Challenge Will Strengthen Your Entire Core")