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Single-Leg Hamstring Curl

Also written as Single leg hamstring curl, One leg curl

What it trains

hamstrings

Also: calves

Equipment

leg curl machine

Setup

  • Set up on the leg curl machine with one leg only under the roller.
  • Keep the hips square and pressed into the pad.

Execution

  1. 1.Curl the heel toward the glutes with one leg.
  2. 2.Squeeze at the top, then lower under control to near full extension.
  3. 3.Complete the reps, then switch legs.

Breathing

Exhale as you curl, inhale as you lower.

Form cues

  • Keep the hips level — do not let the working side hike up.
  • Match the range and tempo on both legs.
  • Slow on the way down.

Common mistakes

  • Twisting the hips toward the working leg.
  • Using momentum to start the curl.
  • Doing more on the stronger side.

Technique written to align with

  • ACSM — Guidelines for Exercise Testing and Prescription

Instructions and diagrams on this page are original to QuantumWorkout.