It is clear that smoking is bad for our health while taking exercise does good to us.Smoking not only bring brings us too much illness but it also pollutes the air around us ,especially in a public place.What's worse,it will waste a lot of money.However,taking exercise regularly will relax ourselves and will surely build up our body.What's more,exercise can develop our character.And we can make friends while taking exercise.So we should balance the advantages and disadvantages of the two ,therefore we should form a good habit ,which will be of great benefit to us .
