Millions of people suffering from joint pain and osteoarthritis are missing the most effective treatment, which is exercise. Osteoarthritis affects nearly 600 million people worldwide and potentially up to a billion by 2050. Stiff knees and sore hips are not an inevitable part of aging. Movement nourishes the cartilage, strengthens the muscles, relieves inflammation and transforms the biological processes that cause joint damage. The most powerful treatment is not surgery or drugs, but exercise. Aerobic exercises such as brisk walking, cycling or swimming reduce pain in the short and medium term, improve walking and quality of life.[1]