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Here's Your 5-Minute Washboard-Abs Workout From a Celeb Trainer
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1

Hollow Rock Flutter Kick 

  • Extend your arms straight back behind you and legs extend out.
  • Lift up upper back and head while hovering legs off the floor, hollowing out your belly.
  • Make sure lower back does not arch up.
  • Flutter kick your feet for a count of 30.
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