CalixDescription
Position Side plank with the elbow and the forearm on the ground and the legs slightly bent.
Execution Lift your upper knee while keeping your feet close together, like a “shell opening,” then slowly return to the starting position. Keep your core stable and your hips aligned.
Muscles
Primary muscles
- Glutes
- Abs (rectus abdominis)
Secondary muscles
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Description and images from the open wger exercise database, licensed CC BY-SA 4.0 (authors: wger.de, teus_ergaster, jptjptjptjpt). Translations by Calix are shared under the same license. Muscle diagrams: wger project (AGPL-3.0).