Single-Arm Cable Curl

One arm at the low pulley, elbow pinned at the side; working alone stops the strong arm from carrying the weak one.

How to do it

Setup

One handle at the low pulley, elbow pinned at the side, free hand on the hip.

Steps

Curl the handle to the shoulder.
Keep the elbow glued in place.
Lower with tension to a long arm.

Common mistakes

Leaning away from the stack: stand square. The strong side setting the weight: the weak arm rules. Wrist curling at the top: straight line to the handle.

Breathing

Exhale on the curl, inhale lowering.