According to a number of doctors, swimming is the best form of physical activity. Swimming is a low impact exercise (unlike jogging) and offers a high calorie burn while being safe enough for a wide variety of people. It also treats orthopaedic issues, such as back pain. Swimming strengthens your heart and lungs and works out all your major muscles. It’s good for you. Mikael Phelps won’t lie:
Fun fact: About 50% of people worldwide can’t swim.