It’s no secret that smoking is bad for your health, but some people still chose not to quit smoking. It’s important to gain a good understanding of why exactly smoking is ‘bad’ for you. Smoking causes tar to block lungs up so it makes breathing much more difficult, but smoking also increases the chance of the individual developing cancer, particularly in the lungs. Cigarettes consist of toxins that are often used to harm animals. For example, chemicals in cigarettes are also shared in rat poison meaning that this is harmful for your body. There is no doubt that if you quit smoking, your health will improve.