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Exercise Ball Leg Curl

Hamstrings CalvesGlutesAbs Isolation BodyweightStability ball
Demo (loops)

How to do it

Starting position

  1. Lie on the floor and place your ankles on the exercise ball.
  2. Place your palms on the floor to stably support your upper body.
  3. Lift your hips until your body forms a straight line.

Movement

  1. Press into the exercise ball with your toes and pull your feet toward your body.
  2. Bend your knees and bring the exercise ball under your hips.
  3. Slowly straighten your legs and return to the starting position.

Breathing

Exhale as you pull the ball in and inhale as you push it away.

Cautions

  • If your lower back sags, it can cause lower back injury, so squeeze your glutes.
  • If your pelvis tilts to one side, it strains the joints, so maintain balance on both sides.

Exercise info

Primary musclesHamstrings
Secondary musclesCalves · Glutes · Abs
EquipmentBodyweightStability ball
Movement patternIsolation
Rep range10–15 reps
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Representative exercise: Exercise Ball Leg Curl

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This information is based on our analysis of public content from evidence-based training experts in Korea and abroad. It is not a substitute for medical advice. Weights and sets differ from person to person. The GYMKC app uses the sets you log to calculate the weight and reps for your next set.