Its a great alternative to weight baring exercise such as running, walking gym work, also being able to maintain the same level of heart rate as these exercises, but keeps the stress impact off your body.
Swimming on a regular basis can help you build endurance, cardio fitness and muscle strength. As the swimming workout is increased gradually the heart rate and muscle activity is improved in water. Always warm up before a swimming workout session. A the end of a swimming session swim at a slower rate, slowing your heart rate down and help your muscles recover and relax your body after a workout session.
Simple water exercises known as aqua aerobics and other exercises such as kicking workouts, pool running and other swimming workouts, creates a great workout session. Also, swimming is low impact workout session and so any injuries to your joints and muscles are prevented.