If you smoke, you will lose energy, usually because of the following factors: First, the most common factor is lung dysfunction, smoking will release nicotine and tar components, nicotine and tar will be absorbed by the alveolar surface of the material, the absorption effect is particularly significant in those with lung dysfunction, there will be a lack of energy in the body oxygen state. This symptom is especially typical of patients with a past history of pulmonary hypertension, chronic pulmonary heart disease, chronic obstructive pulmonary emphysema, chronic bronchiectasis, etc. Secondly, the lack of energy when smoking is also common in patients with a past history of coronary heart disease, coronary atherosclerotic heart disease, unstable angina, myocardial ischemia, etc. This past history is especially significant in coronary atherosclerotic heart disease, when smoking will lead to a transient spasm of the coronary arteries, ischemia, will produce the clinical symptoms of weakness.