3. Swimming- Swimming can be done at a community center, local pool, home pool, or at a fitness center. Swimming is a prime way to get a cardiovascular workout. It is great for strengthening the heart muscle and helps improve oxygen flow in the muscles. Swimming can be done slow or at a rapid pace, and can be done for short or long distances. Swimming can also be done in a variety of strokes and with or without swim aids such as kickboards. Swimming is also good for the body because it strengthens the abdomen, shoulders, back, and tones the entire body.