Performing the: A Step-by-Step Tutorial Cable Seated Floor One Arm Concentration Curl
Sit on the floor with your legs spread in a V-shape and position yourself close to the cable machine with the handle in one hand.
Lean slightly forward from your waist and let the arm with the handle extend fully towards the machine, keeping your arm close to your body.
Slowly curl your arm, bringing the handle towards your shoulder, while keeping your upper arm stationary.
Hold the position for a second when your bicep is fully contracted, then slowly return to the starting position. Repeat for the desired number of reps before switching to the other arm.