People are busy working every day, so they do not have e time to do exercise. As a result, many people become too f or too thin. To keep our bodies healthy, we have to do e every day.
There are many kof exercise. Bending (弯腰) and stretching (伸展) help us move easily. Before we play ball games or swim, it is better for us to do bending and stretching exercise first. This kind of exercise is sometimes c warm up exercise. Running is also good exercise. If we cannot run fast, we can jog. Jogging means running s. Again, before we run or jog, we must do warm up exercise. Also, we should not run or jog in busy streets. The a there is often dirty. Some people like weight lifting (举重) because it can make their bodies strong. Also, we need to do some warm up exercise before weight lifting.
