This document provides information about nicotine cravings when quitting smoking. It discusses that there are two types of cravings - psychological and physical. Psychological cravings are triggered by habits associated with smoking, while physical cravings are the body's reaction to nicotine withdrawal. Nicotine causes cravings by stimulating the brain's pleasure centers. Cravings typically last 3-5 minutes. Ways to handle cravings include drinking water, exercise, distracting activities, and reminding yourself of reasons for quitting. Nicotine replacement therapy can also help reduce craving symptoms.