Primary
Rehabilitation
Secondary
Gluteus Medius, Hip Abductors
Equipment
Bodyweight
Difficulty
Beginner
Type
Rotation
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Exercise guidance based on established strength-training principles and practical programming.
The clam shell targets the gluteus medius, a critical hip stabilizer often weak in those with knee pain, IT band issues, or hip instability. Strengthening this muscle improves hip mechanics during walking, running, and single-leg activities.
When to use it
Use for hip stability and glute activation.
Who it's for
All levels, especially runners and those with knee issues.
Keep your hips stacked and feet together throughout. Rotate from your hip joint, not your spine—your pelvis should not roll backward. Add a resistance band above your knees for progression.
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Also targets: Glutes, Hip Abductors
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Lie on side with knees bent at 45 degrees.
Keep feet together and hips stacked.
Lift top knee while keeping feet together.
Rotate from hip, not spine.
Lower knee back down with control.
Complete reps then switch sides.
Targets gluteus medius for hip stability.
Keep hips stacked and dont roll back.
Can add band for resistance.
Use clam shells for hip prehab, glute activation warm-ups, or knee/hip rehabilitation. Program 3 sets of 15-20 reps per side. May help address knee valgus and IT band issues with consistent practice.
Rolling hips back, losing the neutral spine position.
Changing your back position during the Clam Shell can alter the movement and make the load harder to control. Brace your midsection and keep the torso position called for by the exercise.
Moving from spine instead of hip.
Losing hip position during the Clam Shell changes the loading pattern and can reduce the intended work for your Gluteus medius. Keep your hips aligned with the setup cues and move only through the range you can control.
Going too fast which reduces muscle tension and control.
Rushing through the Clam Shell makes it easier to lose position and harder to keep tension on your Gluteus medius. Slow down enough to control both the lifting and lowering portions of each rep.
All levels, especially runners and those with knee issues.
Lower reps with heavier weight builds raw strength. Your muscles and nervous system adapt to handle more load over time. This range is best for strength-focused goals.
This rep range keeps your muscles under tension long enough to trigger growth. Most people see the best muscle-building results in this zone. It balances strength and muscle size.
Higher reps with lighter weight builds muscular endurance and improves conditioning. This range is good for joint health and building work capacity.
General guideline: 3 sets of 15-20 each side. Rest 30 seconds.
MySetPlan places Clam Shell inside a complete workout — with the right sets, reps, rest periods, and a progression you can follow week to week.
Sample workout
MySetPlan guides you set by set, times your rest, lets you swap if equipment is busy, and tells you what to do next.
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Clam Shell
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Frequently Asked Questions About the Clam Shell
The Clam Shell primarily targets the Gluteus medius, making it an effective exercise for rehabilitation development. Secondary muscles worked during the Clam Shell include Gluteus minimus, Tensor fasciae latae, providing additional training stimulus. Stabilizer muscles engaged include Core.
Yes, the Clam Shell is an excellent choice for beginners due to its straightforward movement pattern and lower technical demands. All levels, especially runners and those with knee issues. Start with lighter weights to master proper form before progressing.
For the Clam Shell, the recommended approach depends on your goals. 3 sets of 15-20 each side. Rest 30 seconds. For strength, use 12-15 reps. For muscle growth, perform 15-20 reps. For endurance, complete 20-30 reps.
Yes, the Clam Shell can be done at home with no equipment. It requires minimal space and is a great option for home workouts targeting rehabilitation.
Good alternatives to the Clam Shell include: Side-Lying Hip Abduction, Fire Hydrant. These exercises target similar muscle groups as the Clam Shell and can be used as substitutes based on your equipment availability, gym setup, or training preferences.