Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Stand under a Smith machine bar, feet elevated, heels off the floor. Position the bar across your upper back. Unlock and stand with feet shoulder-width apart. Engage your core, maintain a slight bend in your knees. Raise onto your toes, lifting heels as high as possible. Pause at the top. Slowly lower heels to the starting position. Repeat.
Control the movement to maximize calf engagement. Squeeze your calves at the top. Keep your core engaged and knees slightly bent. Ensure full range of motion, lowering heels below parallel if possible. Use a challenging but manageable weight.
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