Name: Cannonball Situp Also known as: (If you know these by another name, please leave a comment below). Main muscles used: Stomach, hip flexors. Other muscles used: Shoulders. Top tips:
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Name: Cannonball Situp Also known as: (If you know these by another name, please leave a comment below). Main muscles used: Stomach, hip flexors. Other muscles used: Shoulders. Top tips: