Nicotine withdrawal refers to the physical and psychological symptoms that occur when a person who is dependent on nicotine reduces or stops tobacco use.
Nicotine withdrawal happens because your brain has adapted to a steady supply of nicotine. When that supply decreases, the brain needs time to rebalance. Symptoms typically peak within 24–72 hours of your last cigarette and gradually ease over the following weeks. Common symptoms include irritability, anxiety, difficulty concentrating, increased appetite, and strong urges to smoke. The intensity and duration vary depending on how long you have smoked and how many cigarettes you smoked per day.
SmokeClock reduces withdrawal severity by cutting down gradually rather than stopping all at once. Instead of triggering full withdrawal on day one, your body adapts slowly as you reduce your daily count week by week. By the time you reach zero, the nicotine dependence is already much lower — making the final step far less intense.
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