【正确答案】　　Yeah, several bad effects are caused by lack of exercise. The first one is a wide range of health problems, such as obesity. The fewer sports people do, the fewer calories they can bum. Nowadays, people consume too much fat because a lot of foods are rich in it. Without taking exercise, people will fail to lose weight and get obese. Another problem is that people tend to live a less productive life. Appropriate exercise allows time for you to relax and recharge your batteries so that we can have enough energy to deal with what’s important in our work and life. However, lack of physical activities makes us feel tired easily and lowers our efficiency.