Cable Seated Floor One-Arm Concentration Curl

Seated on the floor facing a low pulley, the working elbow rests on the raised knee of the same side; curl the handle toward the head.

How to do it

Setup

Seated on the floor facing a low pulley, the working-side knee bent up, the back of the upper arm on it, the other hand on the floor behind.

Steps

Curl the handle toward the head, arm resting on the knee.
Squeeze at the top for a beat.
Extend the arm toward the pulley slowly; switch arms after the set.

Common mistakes

Sitting too close to the stack: slide back until the cable pulls with the arm straight. Knee dropping away from under the arm: hold it up with the foot planted. Leaning back on the support hand to heave the handle: the torso stays still.

Breathing

Exhale on the curl, inhale lowering.