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Place your feet about shoulder-width apart, so that the band is taut but not stretched. Bend your knees slightly and push ...
13 小时on MSN
A reverse plank variation is an excellent move for challenging our anterior chain - which is all the muscles that run down ...
Ditch sit-ups and build real core strength with this 10-minute plan. Tone your abs and pelvic floor using breath-focused, low ...
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