Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Attach a rope handle to the high pulley. Stand facing away, holding the rope overhead, elbows bent. Step forward to create tension. Extend arms fully, keeping upper arms stationary. Pause at the bottom, contracting triceps. Slowly return to start. Repeat.
Engage your core for stability. Keep upper arms stationary and elbows close to your head. Use controlled movements. Start with a lighter weight to ensure proper form. Exhale on extension, inhale on return.
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