A focused arm isolation exercise performed on a cable machine while seated or standing with elbow braced against your thigh or a stable surface. Grasp the cable handle and curl it toward your shoulder by bending only at the elbow, keeping the upper arm stationary. Slowly return to the start under control, maintaining tension on the biceps throughout. This variation enhances peak contraction, improves muscle definition, and increases arm strength with strict form.
Log your cable concentration curl sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.