This rotation begins at the hips and is transferred up the torso to the shoulder and arm. Just before you begin the arm pull, you should begin to rotate in the opposite direction. Swim fins are acceptable swim aids. It helps to realize that good swim technique takes time to develop and regular practice to maintain. See the sample workouts below to improve or maintain your good form.
Swimming is an excellent aerobic exercise.
Nearly all the major muscle groups are recruited when you swim with the proper technique. Also, use a variety of strokes to recruit additional muscles. Lessons for both adults and children are usually available at your local YMCA, high school, or college. Injuries from swimming usually occur in the shoulder. Make sure you are familiar with the water in which you swim.