Elbow-to-knee crunch

The elbow-to-knee crunch is a bodyweight exercise targeting the ab muscles, the obliques and rectus abdominis or "six-pack" muscles in particular. It can be performed for time or reps as part of the ab-focused portion of any workout.


  1. Strengthens the obliques and rectus abdominis
  2. Simple exercise that can be done by all fitness levels
  3. Works well with other ab-focused movements in a circuit

Elbow-to-knee crunch Images


Elbow-to-knee crunch Instructions

Elbow-to-knee crunch muscle diagram
  1. Lie on the floor, crossing your right leg across your bent left knee. Clasp your hands behind your head, beginning with your shoulder blades on the ground. This will be your starting position.
  2. Perform the motion by flexing the spine and rotating your torso to bring the left elbow to the right knee.
  3. Return to the starting position and repeat the movement for the desired number of repetitions before switching sides.