Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Lie on a bench, holding dumbbells above your chest, palms facing each other. Lower the dumbbells slowly by bending your elbows, keeping them close to your body. Pause near your chest, then press the dumbbells back up, extending your arms fully. Repeat with control.
Keep elbows tucked in to engage triceps. Maintain neutral wrists. Control movement, avoid rushing. Engage your core for stability. Don't fully lock out elbows. Keep shoulder blades on the bench.
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