Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Engage your core, stabilize on the ball. Curl dumbbells upward, keeping upper arms still. Squeeze biceps at the top. Slowly lower weights, resisting gravity.
Ensure your armpits remain securely over the stability ball to maintain a stable base throughout the exercise, preventing unwanted rocking. Actively drive your elbows downward towards the floor as you curl the dumbbells, which helps to isolate the biceps and prevent momentum from assisting the movement. Focus on squeezing your biceps hard at the peak of the curl to maximize muscle contraction and achieve a stronger contraction. Control the descent of the dumbbells, resisting gravity to maintain tension on the biceps and promote muscle growth.
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