Lie prone on your stomach with toes tucked in and arms extended overhead. Contract your abs and slowly raise one arm and opposite leg a few inches off the floor. Alternating sides.
via-Erik Heywood
Author
Lie prone on your stomach with toes tucked in and arms extended overhead. Contract your abs and slowly raise one arm and opposite leg a few inches off the floor. Alternating sides.
via-Erik Heywood
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