Why do some smokers feel calmer after smoking a cigarette?

Smokers often feel calmer after smoking because the act provides rapid relief from withdrawal symptoms, which occur due to physical dependence on nicotine.

When a person is addicted, abstinence from tobacco can trigger symptoms such as anxiety, irritability, and an impaired ability to concentrate. Because nicotine reaches the brain in less than 10 seconds, smoking a cigarette quickly reverses these uncomfortable withdrawal effects. This creates a powerful, albeit misleading, perception that smoking itself enhances mood and performance, when in reality the smoker is simply alleviating the distress caused by their own physical dependence.1

Additionally, nicotine is known for its complex psychoactive effects, which can be both stimulating and tranquilizing. While it triggers the release of dopamine—a neurotransmitter critical to the drug's reinforcing and pleasurable effects—the primary "calming" sensation reported by regular smokers is largely the result of satisfying the body's craving for nicotine to return to a baseline state.21