Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Grip the bar with an underhand grip. Curl the bar upward by flexing your wrists. Squeeze your forearms at the top, then slowly lower the bar by extending your wrists. Keep your elbows and shoulders still throughout the movement.
To effectively target your wrist flexors, focus solely on wrist movement, minimizing any involvement from your forearms or lower arm. Maintain a stable forearm position throughout the exercise, preventing any rocking or shifting that could engage other muscles. At the peak of the curl, consciously squeeze your forearm muscles to maximize contraction and ensure full engagement of the targeted muscles. Control the descent of the bar evenly, resisting the urge to let gravity take over, which helps build strength and stability.
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