Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Sit with legs hip-width apart, feet flat. Place a resistance band above your knees. Maintain a straight back and engaged core. Slowly push knees outward against the band, keeping feet still. Hold briefly, then return. Repeat.
Use a tight resistance band for consistent tension. Maintain a straight back and engaged core. Perform slowly and with control. Keep feet flat throughout.
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