Step by step instructions, muscle activation and variants for the Twisting Crunch (Straight Arms).
The Twisting Crunch with Straight Arms is a bodyweight core exercise that combines a crunch with a rotational reach, targeting the rectus abdominis and obliques simultaneously. Keeping the arms straight increases the lever arm, amplifying the demand on the abs.
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The Twisting Crunch (Straight Arms) is a foundational movement that builds strength and muscle through controlled, progressive overload. Train it 1 to 2 times per week with 3 to 5 working sets per session, gradually adding weight or reps as form holds up.