Please choose the correct ending to complete the given sentence: Health: [header] How to avoid dying prematurely [title] Stop smoking. [step] Smoking tobacco is one of the most harmful things you can do on a regular basis. It's well established that smoking damages nearly every organ of the body and causes many diseases, including all sorts of cardiovascular related problems, which contribute significantly to premature death.

Ending1: Quit smoking and stop smoking anything that is in the way. [substeps] Tobacco is also considered a potentially dangerous substance if inhaled. Ending2: In addition, tobacco is dangerous to those currently smoking. If you're quitting cold turkey, quit. Ending3: Whether you smoke for the sake of developing your heart health or simply smoke because you have to, there is a very great chance of you quitting smoking. [substeps] Smoking is one of the major causes of premature death, so you have to stop smoking before this happens so you can think more rationally about quitting. Ending4: Smoking is estimated to increase the risk of coronary heart disease and stroke due to atherosclerosis by up to 4x compared to non-smokers. Cigarettes contain a variety of toxic compounds that damage blood vessels and poison tissues.

Answer format: ending1/ending2/ending3/ending4