Lying Leg Curl

A machine isolation exercise targeting the hamstrings. Useful for building knee flexion strength and hamstring size with minimal lower-back demand.

Also known as: leg curl machine, hamstring curl, prone leg curl, leg curls, hamstring isolation

Beginner Isolation Leg curl machine

How to do the Lying Leg Curl

  1. Lie face down on the machine with knees aligned to the machine's pivot point.
  2. Place the pad against the back of your lower legs just above the heels.
  3. Grip the handles and keep your hips and thighs pressed firmly into the bench.
  4. Start with legs extended and knees soft, not forcefully locked out.
  5. Curl the pad by bending your knees until your heels approach your glutes.
  6. Squeeze the hamstrings at the top without letting your hips lift off the pad.
  7. Lower the weight until your legs are nearly straight and the hamstrings fully lengthened.

Common mistakes

  • Pad set too high on calves
  • Hips lifting off the bench
  • Kicking the weight up
  • Cutting the bottom range short
  • Forcing knee lockout between reps

Form cues

  • Match knees to pivot
  • Keep hips pinned down
  • Curl through the heels
  • Squeeze the top

Substitutes & similar