Start in a plank position with both hands placed on top of the medicine ball and your shoulders lined up over top of your wrists.
Maintain a flat back, a neutral spine while continuing to breathe at a steady tempo.
Your body should form a straight line from shoulders to ankles.
Engage your core by sucking your belly button into your spine.

Muscles Used: Rectus abdominus, transverse abdominals, lower back extensors

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