Step by step instructions, muscle activation and variants for the Starfish Crunch.
The Starfish Crunch is a beginner-friendly core exercise performed on the floor with the arms and legs extended wide in a star shape. By alternately bringing an elbow toward the opposite knee, it challenges the abs and obliques through a rotational crunch pattern without requiring any equipment.
Common mistakes content is coming soon.
The Starfish Crunch 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.