Return to Smoking & Vaping Irritability Chest Tightness Cold Symptoms Cravings Dizziness Gas Hunger Irritability Lack of Focus Low Energy Sleepiness Ways to Cope Why you’re feeling itYour body is craving nicotine How long it lasts2- 4 weeks What you can doTake a walk or do some other kind of exercise. Try to relax: take a hot bath, listen to music, stretch, get a massage.