Swimming is very popular.People like in summer because water makes people feel .If you like swimming but swim in a wrong place,it may be .These years,a lot of people when they were themselves in the water, and most of them were students.Some people are not in swimming.Theyoften think they swim so well that will happen to them in the water. Summer is here again.If you swimmingthis summer,don not get into water when you are .If there is a "No Swimming"sign,still don not get into water.If you remember these,swimming safe.Swimming is good for your health.