Bikini Body Workouts for Women that Work
The plank is the primary move for the 30 day beachbody challenge. Planks are a core stability exercise that sculpt the primary abdominal muscles. Planks are also important for spinal health and reduced lower back pain. In the 4-week challenge, you’ll do planks every workout, sometimes twice. If at any point in the challenge you can’t do the prescribed plank duration, simply take 5-10 second breaks and then resume where you left off.
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