Step by step instructions, muscle activation and variants for the Elbow to Knee.
The elbow-to-knee crunch is a core exercise performed lying on your back that brings the elbow toward the opposite knee, strongly activating the rectus abdominis and obliques. The twisting component increases oblique recruitment compared to a standard crunch.
The Elbow to Knee 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.
