How to Do Ball Leg Curl
Start and end of one clean rep of Ball Leg Curl.
Quick facts
| Primary muscle | Hamstrings |
|---|---|
| Secondary muscles | Calves, Glutes |
| Equipment | Bodyweight |
| Category | Strength |
How to perform Ball Leg Curl
- Begin on the floor laying on your back with your feet on top of the ball.
- Position the ball so that when your legs are extended your ankles are on top of the ball. This will be your starting position.
- Raise your hips off of the ground, keeping your weight on the shoulder blades and your feet.
- Flex the knees, pulling the ball as close to you as you can, contracting the hamstrings.
- After a brief pause, return to the starting position.
Muscles worked
- Hamstrings (primary): bends the knee and extends the hip through hinges and pulls.
- Calves (secondary): points the foot to power push-off and steady the ankle.
- Glutes (secondary): extends and stabilises the hip — the engine behind hinges, squats and sprints.
Sets & reps by goal
| Goal | Sets × reps | Load | Rest |
|---|---|---|---|
| Strength | 3–5 × 3–5 | Heavy (~85%+) | 2–3 min |
| Hypertrophy | 3–4 × 8–12 | Moderate (~65–75%) | 60–90 s |
| Endurance | 2–3 × 15–20 | Lighter (~50–60%) | 30–45 s |
Bodyweight movement: once you own the top of a rep range, progress by slowing the tempo, pausing at the hardest point, or moving to a harder variation instead of adding load.
Form tips
- Lead with the hips, keep a soft knee and hold a long, flat back through the hinge.
- Own the largest range you can control with clean form before you chase extra reps.
- Treat every rep the same — a repeatable setup and bar path is what lets you add weight safely over time.
- Warm up the pattern with a couple of lighter, submaximal sets before your working sets.
Common mistakes
- Rounding the lower back to reach lower instead of hinging at the hips.
- Cutting the range short to squeeze out extra reps instead of owning each full one.
- Chasing weight jumps before the current load feels solid on every rep.
Frequently asked questions
What muscles does Ball Leg Curl work?
Ball Leg Curl mainly works the hamstrings, with the calves, glutes helping as secondary movers.
What equipment do I need for Ball Leg Curl?
None — Ball Leg Curl is a bodyweight movement, so you only need your bodyweight and a little space.
How many sets and reps should I do for Ball Leg Curl?
It depends on your goal: about 3–5 sets of 3–5 heavy reps for strength, 3–4 sets of 8–12 for muscle growth, or 2–3 sets of 15–20 for endurance. Bodyweight movement: once you own the top of a rep range, progress by slowing the tempo, pausing at the hardest point, or moving to a harder variation instead of adding load.
Train Ball Leg Curl with a coach in your pocket
Gimmy is your AI gym buddy — it programs Ball Leg Curl into recovery-aware workouts, tracks your sets, and shows one score that tells you if it's working.
Get early access