Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Hang from a pull-up bar with an overhand grip, shoulder-width apart. Engage your core, keep your body straight, and lift your legs into a flutter kick position. Perform small, alternating leg kicks, keeping legs straight and toes pointed. Breathe steadily throughout.
Secure grip for stability. Engage your core to prevent swinging. Keep legs straight, move them with control. Start with shorter durations to build endurance. Maintain a neutral spine. Wrist straps can help if needed.
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