I strongly agreed that physical exercise is useful to our health. First of all, it helps us to have a nice body and keep fit. We can see many fat people after doing physical exercises lose right and have different appearances. They don't need to worry about their weight anymore. Additionally, it prevents us from illness. People often doing physical exercise it is usually healthier thân the other. They have trong bodies and good resistances. It also make us feel comfortable and relax. Alter a hard-working day, you go home and feel very tired. At that time, you can do some physical exercises. I'm sure that afterward you wI'll feel much better. Besides, some investigations showed that physical exercises can prolong our longevity. It's very useful for the old to do physical exercises everyday. In general, physical exercises make up healthy and we should do it everyday to keep fit and stay healthy.