Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Kneel with knees hip-width apart. Extend right leg, heel on ground, toes up. Shift hips back, maintain straight spine and lifted chest. Gently lean forward from hips, feeling a stretch in the back of your leg. Hold for 20-30 seconds, breathe deeply. Repeat on the other side.
Maintain a straight back. Engage your core for balance. Avoid bouncing; stretch gently. Breathe deeply. Cushion knee if needed.
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