Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Stand with feet shoulder-width apart, knees slightly bent. Hold a weight or medicine ball in front of your chest. Engage your core, keep your back straight, and rotate your torso alternately to the right (pivoting on the left foot) and left (pivoting on the right foot).
Control movements for muscle engagement. Rotate from the torso, not just the arms. Maintain a slight knee bend for balance. Exhale during the twist. Start with a lighter weight.
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