Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Sit with legs extended, arms at sides. Lean back slightly, engage core, back straight. Lift legs, bending knees slightly. Lift torso to form a 'V' shape. Briefly hold, maintaining core engagement. Lower torso and legs with control. Repeat.
Maintain a tight core for balance. Keep your back straight. Control movement throughout. Breathe steadily: exhale on lift, inhale on lower. Start with fewer reps and increase gradually.
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