The rectus abdominis receives all the credit for a well-developed midsection. But there’s an underrated star beneath it that can pull your stomach in and enhance your six-pack even more! https://buff.ly/2y4DYFg

The rectus abdominis receives all the credit for a well-developed midsection. But there’s an underrated star beneath it that can pull your stomach in and enhance your six-pack even more! https://buff.ly/2y4DYFg

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