Single-leg curl up

The single-leg curl up is a bodyweight abdominal movement that teaches and reinforces abdominal “bracing” for strength training. It is usually performed along with variations of the bird dog and side plank as the “McGill big three.” The curl up can be performed for time or for reps, with or without pauses at the top position, as part of a warm-up or the core-focused component of any workout.


  1. Strengthens the rectus abdominis or "six-pack" muscles, as well as the deep core muscles
  2. Teaches intra-abdominal pressure and bracing
  3. Can be performed by all fitness levels
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Single-leg curl up Images


Single-leg curl up Instructions

Single-leg curl up muscle diagram