Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Sit on a bench, feet flat, holding dumbbells with a neutral grip. Maintain a straight back and engaged core. Start with arms extended. Curl dumbbells upwards, bending elbows and keeping upper arms still. Lift to shoulder level, pause, squeezing biceps. Lower slowly and repeat.
Maintain a neutral wrist. Avoid swinging; control the movement. Keep elbows close to your body. Squeeze biceps at the top. Relax shoulders; avoid shrugging. Start with lighter weights to ensure proper form.
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