The external rotation band exercise targets the muscles of the rotator cuff, including the infraspinatus, teres minor, and subscapularis. It also works the deltoid, biceps, and triceps muscles.

The external rotation band exercise should be done 2-3 times a week, with at least one day of rest in between. It is important to allow your muscles to rest and recover in between workouts.

The number of sets and reps you do for the external rotation band exercise will depend on your fitness goals. If you are looking to build strength, you should aim for 3-4 sets of 8-12 reps. If you are looking to increase muscular endurance, you should aim for 2-3 sets of 15-20 reps.

The type of band you should use for an external rotation band exercise will depend on your fitness level and the intensity of the exercise. Generally, a medium-resistance band is recommended for beginners, while heavier bands can be used for more advanced exercises.

The external rotation band exercise is a great way to strengthen the muscles in your shoulders and arms. It can help improve shoulder stability, reduce shoulder pain, and increase range of motion. It can also improve posture and help to prevent shoulder injuries. Additionally, the exercise can help improve the coordination of your shoulder and arm muscles, which can help improve your overall performance in sports and activities.