Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Set the rings around head height and grip them firmly. Lift your feet off the ground and stabilize your shoulders. Raise your knees toward your chest using your core. Lower them back down with control, avoiding swinging.
Avoid swinging—keep your core tight and controlled. Lift your knees high toward your chest for better activation. Keep shoulders engaged to maintain stability. Lower your legs slowly to maintain tension.
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