Exercise improves cardiovascular and respiratory health, it decreases the risk of osteoporosis, it decreases triglycerides and increases HDL (good) cholesterol, it decreases blood sugar and enhances metabolic rate, it decreases the risk of stroke and heart attack, it decreases the risk of many forms of cancer, it decreases body fat and builds muscle mass, it boosts self confidence, improves sleep, decreases stress, and increases overall well-being.