Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Begin seated on a bench with legs bent and feet flat. Slide off the bench, supporting your weight with one arm and the opposite bent knee. Lower your body by flexing your elbow, feeling a stretch in your shoulder, then extend back up to the starting position, alternating sides.
Engage your triceps throughout the movement. Avoid fully extending your elbow at the top. Maintain a straight back to prevent lower back strain. Keep your feet firmly planted on the floor for stability. Focus on controlled movements rather than speed.
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