Lap swimming and water exercise memberships with online sign up for lane/space reservations. Exercising in water offers many physical and mental health benefits and is a good choice for people who want to be more active with lower risk of injury. The CDC reports that swimmers have about half the risk of death compared to inactive people and people report enjoying water-based exercise more than exercise on land. They can also exercise longer in water than on land without increased effort or joint or muscle pain.