Has its basis in physical activity to improve health, reduce pain, maintain fitness and assists in preventing chronic diseases. It is the study of the acute responses and chronic adaptations in the body due to exercise. Some chronic diseases treated by Exercise Physiologists include heart disease, osteoporosis, weakness, diabetes, obesity, cancer and depression. Appropriate exercise will also prevent weight gain and help in maintaining weight loss. Exercise Physiologist cause positive effect on chronic diseases by changing a persons muscular, cardiovascular, and neurohumoral systems, leading to improved function.