Weighted

Seated Leg Curl

Animated demonstration of the Seated Leg Curl

Muscles worked

Front and back body map of the muscles worked by the Seated Leg Curl

Main muscles

  • Biceps Femoris (Long Head)

What it is

This machine-based isolation exercise targets your hamstrings. You'll use a seated position to flex your knees, pulling a padded lever towards your body. It effectively strengthens the muscles at the back of your thighs.

Technique tips

  • Adjust the machine to comfortably fit your height.
  • Keep your torso stationary throughout the movement.
  • Control the weight; avoid swinging or momentum.
  • Exhale as you pull the lever, inhale on the return.
  • Slowly return to the starting position for full muscle engagement.
  • Maintain slight tension on your hamstrings at the top.

How to track your progress

Log the weight and reps of each set. Straddly turns every set into an estimated one-rep max, so a heavier single and a strong set of eight both count as progress, and it flags a personal record the moment you beat your best.

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