Hammer Curls are a variation of the traditional bicep curl exercise that targets the biceps, brachialis and brachioradialis muscles. The exercise is typically performed using a pair of dumbbells, with a neutral grip (palms facing each other).

Dumbbell Curls are a popular exercise that targets the biceps muscles. The exercise is typically performed using a pair of dumbbells, with a supinated grip (palms facing forward).

Concentration curls, also known as "one-arm dumbbell curls," are a weightlifting exercise that targets the biceps muscles. The exercise is performed by sitting on a bench or chair, with the elbow of the working arm resting against the inner thigh, and holding a dumbbell with an underhand grip.

Barbell curls are a weightlifting exercise that targets the biceps muscles. The exercise is performed by holding a barbell with an underhand grip and then lifting it towards the shoulders, while keeping the elbows close to the body. Barbell curls can be performed as a standalone exercise or as part of a larger workout routine targeting the upper body. It's important to use proper form and not to lift too much weight in order to avoid injury.

Cable rope curls are a weightlifting exercise that targets the biceps muscles. The exercise is performed using a cable machine, with a rope attachment and typically using an underhand grip. The lifter stands in front of the machine, with the rope attached to the low pulley, and curls the rope towards the shoulders, keeping the elbows close to the body. The constant tension provided by the cable machine can help to target the biceps more effectively than using free weights alone. It's important to use proper form, including not swinging the weight, and to start with a weight that is appropriate for the individual's strength level.