INDIANAPOLIS — If you want a strong back, you must have a strong core, and if you want a strong core, you must have a strong back. Jordan Estes at Lifetime has the move just for you. It's called the ...
What Is A Bird Dog Exercise? The bird dog exercise is a core-strength exercise. Your core is bounded by your pelvis, abdominal wall, diaphragm, and lower back. This exercise is also known as quadruped ...
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