Smoking is horrible, bad for you lungs and for your heart. The reason for this is every time you smoke more than one cigarette your life span gets shorter and shorter Smoking makes your teeth yellow and your lungs black. It can give you cancer, shortness of breath, and heart attacks. It can also harm people who surround you who don't smoke. Smoking can make asthma attacks worse and more frequent for people who live with you. One main reason smoking is bad is it can ruin your life. Smoking can ruin all your hopes and dreams.