⑧ Thesis 3.A thesis should not be worded vaguely. Example Smoking is Smoking harms the body by harmful to constricting the blood vessels, your body. accelerating the heartbeat, paralyzing the cilia,纤毛in the bronchial tubes,and activating excessive gastric 的secretions:分泌物in the stomach.Thesis 3. A thesis should not be worded vaguely. Example Smoking harms the body by constricting the blood vessels, accelerating the heartbeat, paralyzing the cilia纤毛 in the bronchial tubes, and activating excessive gastric 胃 的 secretions分泌物 in the stomach. Smoking is harmful to your body.