Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Position arm blaster comfortably around your neck and upper body. Stand with feet shoulder-width apart, holding dumbbells with an underhand grip. Place elbows against the arm blaster, keeping them stationary. Curl dumbbells upward, contracting biceps and maintaining upper arm stability. Lift until biceps are fully contracted and dumbbells reach shoulder level. Pause briefly at the top. Slowly lower to the starting position, controlling the movement. Repeat.
Keep elbows pinned to the arm blaster. Choose a weight allowing strict form. Engage your core for stability. Exhale on the lift, inhale on the lower. Avoid momentum; focus on controlled movements. Use a full range of motion.
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