5. Be more active. Unless you already run marathons you can generally benefit from more exercise; do anything that increases your heart rate for 20-30 minutes, four times a week.

　　5. 多动动总是好的——除非你是刚刚跑完了马拉松，多动动总是对你有好处的。任何能提高心率的运动都好，一次坚持20到30分钟、一周四次。