You can learn basic techniques, then practice them on your own between classes. Walking or running in the water offers many of the same benefits that you gain on land, but far fewer impact injuries. Water provides resistance to make your workout even more effective. If you are uncomfortable immersing yourself in water, this is one water activity that you can do with head and shoulders above water. Full body rhythmic moves for 20 minutes or more in shallow or deep water.
Purpose is to provide cardiovascular benefits.
Flotation belts and devices are used. Simulating land jogging and running at a depth where the feet do not touch the bottom of the water. Flotation belts and devices are used with various drills, methods, and running styles. They create interest and add resistance and support. If you decide on a lap swimming routine for fitness, start out small, perhaps doing one or two laps until you can complete them without straining.