HOW: Start by laying flat on your back. Perform the exercise by flattening your low back into the ground, then lift both legs up straight towards the ceiling. While keeping one leg still, slowly lower one leg down towards the ground as low as...

HOW: Start by laying flat on your back holding onto a sturdy object behind you with your arms and hands overhead. Perform the exercise by flattening your low back into the ground, then lift both legs up straight towards the ceiling. When your legs...

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