It has to stop eventually, as pms.
You are getting a surge of feel good brain chemicals to numb the damage cigarrettes are doing to your body. I should said pain with the advertise ment I saw on tv. Its endorphins, if the advertisment was right, just need to find endorphins some other way. Love, socialing, torn muscles, and smiling get your body's endorphins going. I bet laughter dose to, its also a great workout. 1 minute of laughter burns the same number of calories as 6 minutes of aerobics.