The main advantage to exercising in water is that it offers resistance in all directions. When you exercise on land you have to work against gravity. Exercising in water offers buoyancy, supporting up to 50% of you body weight. It increases muscular endurance and tone, and increases flexibility.
The water’s resistance against your movement results in a higher workout intensity than land-based exercises. The added benefit is that your body feels more supported and less stressed.
Because of the cushioning effect that water provides and the lowered impact on joints, swimming is particularly beneficial for the elderly, overweight, or those recovering from soft tissue and joint injuries.
So if you want to increase your wellbeing with some gentle, highly efficient exercise, then start swimming this spring!