Primary
Rehabilitation
Secondary
Gluteus Medius, Hip Abductors
Equipment
Bodyweight
Difficulty
Beginner
Type
Rotation
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The example below shows one possible placement. Your purchased plan is built from your assessment, and Ely checks every exercise before approving it.
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This page is not medical advice or a rehabilitation protocol. Ely's personal review applies to purchased workout plans and does not replace an in-person assessment by a licensed healthcare professional.
Clam Shell is a beginner-level general fitness movement that trains Gluteus medius. Use a controlled, comfortable range and an easy starting effort. This guide does not assess pain or provide an injury-recovery protocol.
When to use it
Use for hip stability and glute activation.
Who it's for
Adults using the movement for general fitness who can perform it without pain. Clinical concerns require guidance from a licensed healthcare professional.
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.
For general fitness, start Clam Shell with 1-2 light, controlled sets and increase only when the movement remains comfortable. This is not rehabilitation dosage; use the frequency and progression given by your licensed healthcare professional for an injury or surgery.
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.
Adults using the movement for general fitness who can perform it without pain. Clinical concerns require guidance from a licensed healthcare professional.
These ranges illustrate ways to organize training. They are not an individual prescription. Adjust them for the exercise, your experience, and the rest of your program.
Heavier loads can be useful for developing maximum strength. The range shown is an example, and the load must match your current technique and capacity.
Muscle growth can occur across different loads and repetition ranges. This example is not a uniquely effective zone; your overall program and effort also matter.
This is an example of a longer set. A repetition target alone does not establish joint safety or whether the exercise is appropriate for you.
Example: For general fitness, start Clam Shell with 1-2 light, controlled sets and increase only when the movement remains comfortable. This is not rehabilitation dosage; use the frequency and progression given by your licensed healthcare professional for an injury or surgery.
Background for resistance exercises: the 2026 ACSM position stand covers healthy adults, and a load-comparison review found similar muscle growth across loads in studies using sets taken to muscular failure. These findings do not validate every exercise-specific range shown here or require training to failure.
This is one example of how Clam Shell could sit inside a complete workout. Your plan may use different movements after Ely checks your assessment.
Sample workout
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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.
Our library labels Clam Shell as beginner. That category is not an individual assessment. Review the setup, movement instructions, and safety notes, and seek qualified guidance if you are unsure how to perform it.
The programming section shows examples for Clam Shell. The appropriate amount depends on your current ability, the exercise, and your other training. The listed ranges are not an individual prescription or a guarantee of a particular outcome.
The main equipment listed for Clam Shell is no equipment. Check the instructions for any additional support, anchor, bench, rack, or clear space needed. The equipment label alone does not confirm that your home setup is suitable.
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.