Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Position the pulleys of a cable machine above shoulder height and select an appropriate resistance that allows for clean, controlled execution without swinging. Stand centrally between the cable stacks with your feet shoulder-width apart, maintaining a neutral spine and a subtle forward incline at the torso. Reach out and grip one pulley handle at a time to set up your starting stance. Keeping a soft bend in your elbows, sweep your hands down and inward toward the center of your body, focusing on squeezing your chest muscles together as if wrapping your arms around a large tree trunk. Pause to accentuate the peak contraction in your pecs for a moment, then slowly reverse the path back to the starting point under full control.
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