Exercise is healthy but can be stressful and wear on the joints. Swimming exercises are a great alternative to running for people who have developed aches and pains in their knees and hips.
Many local gyms will have a heated pool that offers swimming exercises. These exercises do not need to consist of only swimming laps but will also include a wide variety of exercises that are low impact but provide aerobic exercise.
Aerobic exercises done in a pool are just as effective as those done on dry land. Water adds natural resistance to your workout and is good for your joints. An added benefit of swimming exercises is that you will remain cooler throughout the workout. There is not a lot of jarring when you do swimming exercises, and you may find that some of your every day pains might just start to go away.