If Exercise Were A Medication, It Would Be Considered A Blockbuster Drug. Exercise Treats Depression And Anxiety, Improves Sleep And Well-being, Aids Smoking Cessation, And Enhances Cognition, Even Offering Protection Against Alzheimer's Disease. These Emotional And Cognitive Benefits Occur In Conjunction With Dramatic Physical Health Benefits, Including Increased Fitness, Increased Calorie Burning, Reduced Weight, Reduced Cardiovascular Risk, And Reduced All-cause Mortality. With All Of These Benefits There Are Some Side Effects: Occasional Sore Muscles, Fatigue, Sprains, And Joint Pain That May Occur Depending On A Multitude Of Training And Fitness Factors-- Provided By Publisher.