Regular exercise is an important part of a healthy lifestyle. People who lead an active life are more likely to live longer and less likely to develop serious diseases such as heart disease and diabetes. Physical activity can ease the symptoms of certain long-term health conditions, such as rheumatoid arthritis and chronic obstructive pulmonary disorder (COPD).Exercise not only improves your physical health, it also helps to reduce anxiety and lowers your risk of other mental health conditions such as depression. Although there are no sure-fire recipes for good health, the mixture of healthy eating and regular exercise comes awfully close. Most of The Nutrition Source is dedicated to singing the praises of a good diet. This is where physical activity gets its due.