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박소정69·Bent Knee Lying Floor Row·1y agoStick this to your back, and while keeping your arms fixed, inhale as you arch your back, tighten your back muscles, and exhale while pressing your back against the floor!
Stick this to your back, and while keeping your arms fixed, inhale as you arch your back, tighten your back muscles, and exhale while pressing your back against the floor!