Task 9 A -- improving your immune system B -- increasing your blood circulation C -- strengthening your heart and lungs D -- reducing your risk of respiratory diseases E -- lowering your risk of getting heart disease or stroke F -- lowering high blood pressure G -- keeping your bones, muscles, and joints healthy H -- reducing anxiety and depression I -- improving your mood J -- helping you handle stress K -- helping control your weight L -- improving your balance and coordination M -- protecting against falling and bone fractures in older adults N -- helping increase bone density O -- helping protect against some kinds of cancer P -- making you more energetic Q -- helping you sleep better R -- helping you look better S -- boosting your confidence and self-esteem ( ) 帮助预防某些癌症 ( ) 提高你的自信和自尊