Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Begin seated on a bench with legs spread and a dumbbell between them. Grip the weight with one hand, securing your upper arm against your inner thigh. Extend your arm, curl the dumbbell upwards until your wrist surpasses your elbow, pausing to engage your bicep before slowly lowering back to the starting position.
Anchor your elbow firmly on your inner thigh to maximize bicep engagement. Utilize a complete range of motion, fully extending and curling to the wrist-above-elbow position. Select a weight that allows for controlled movements without relying on momentum.
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