Which of the following statements about the benefits of improving cardiorespiratory fitness is FALSE? Select one: O a. Regular, moderate aerobic exercise can reduce stress and improve your sleep which can result in better immune system health. O b. Cardiorespiratory fitness decreases HDL cholesterol levels, therefore, reducing the risk of heart attack and stroke. O c. Cardiorespiratory training burns calories which helps manage body weight more effectively and keeps body fat levels low. O d. Cardiorespiratory fitness can improve mood, reduce tension and anxiety and symptoms of depression.