Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Begin with your feet planted firmly and stand tall. Rotate your torso away from a fixed point, feeling a stretch across your chest muscles. To deepen the stretch, step your foot in the direction of the rotation. Hold briefly, breathing deeply, then return to the starting position.
Draw your shoulder blades together and slightly downward to enhance posture and activate your chest. Maintain a gaze forward to help open your chest and keep your spine aligned. A gentle bend in your elbows will protect your joints and maximize the stretch. As you inhale, focus on expanding your ribcage to promote muscle relaxation. Execute the movement deliberately and slowly, avoiding any sudden movements. Pay attention to the sensation in your pectoral muscles, ensuring the rotation originates from your chest.
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