Grasp a loop handle of a floor pulley with your left hand, with your palm facing forward. Stand facing the pulley, 1-1.5 feet from it, with your legs shoulder width apart. Bend your knees slightly.
Moving only your forearm, slowly curl the handle up to your upper chest. Keep your elbow pressed against your side throughout the exercise.
Hold this position for a moment and slowly lower the handle. Make sure that only your forearm is moving.