Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Sit with knees bent, feet flat, hip-width apart. Lean back slightly, core engaged, back straight. Hands lightly behind head, elbows wide. Lift right knee towards chest, twisting to bring left elbow towards right knee. Return to start, repeat on opposite side. Alternate sides with control.
Maintain a straight back, avoid rounding shoulders. Engage your core. Focus on controlled movements, exhale on twist, inhale returning. Avoid jerky movements.
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