How to Do Abdominal Crunches Using a Balance Ball
1:55
Added: 2 years ago
From: livestrong
Views: 3,354
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  • wanna do some crunches on my balls?

    Delirium1712 6 months ago

  • oh and how many reps?

    imunchmangoes 2 years ago

  • thank you.

    imunchmangoes 2 years ago

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