根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两多余选项。 If you want to keep in good health, then you need to give much attention to yourself, both physically and mentally.  ___小题1:____ Jogging, cycling, swimming and walking are all good ways to keep the body alert and full of energy. This article explains the benefits of exercise to the human body and mind. Exercise can reduce the risk of heart attacks. ___小题2:____. The reduction in blood pressure, also achieved by exercise, leads to a reduction of work and effort needed by the heart to function. __小题3:____ Physically active people are significantly less likely to have breast cancer and colorectal cancer (结肠癌) compared with people who don’t exercise. Exercise can help improve nervous disorders. Exercising regularly can significantly improve the condition of people who suffer from stress and depression. The sense of physical well-being obtained by exercise has a positive impact on the psychological mood of the person.  ____小题4:___. Exercise can delay aging and its consequences. Increasing age is accompanied by progressive loss of muscular strength, reduced resistance, shortness of breath and instability etc. ___小题5:___ There is much evidence showing that naturally active people have fewer chances compared with the inactive people to end up in bed or in a wheel chair, or to break a leg or an arm. Exercise can help prevent cancer. Regular exercise increases the efficiency of the heart. Exercise is one of the factors that can change our mood. The benefits of exercise are not limited to physical health. This can help you to relax and be free of unnecessary stress. In your daily life you should include regular exercise to keep fit. Physical activity can prevent many of these events, delaying the effects of aging.