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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
You want to make sure that you've got your abs flexed the whole time. If you're doing that properly, you're going to have your lower back pressed into the floor or mat and there won't be any space between your lower back and the floor. That's the key hip position that engages your abs rather than just using your hip flexors.
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