Dull skin: One of the first positive changes you'll notice after you quit is significantly brighter, more alive-looking skin, and nurses say they can tell smokers from nonsmokers by their skin alone.
Nagging cough: Walk too fast, step outdoors on a cold day, or inhale steam from a hot shower and all of a sudden you sound like a one-woman TB ward, and that's your lungs reacting to an overload of irritation.
Dead sense of smell and taste: Here's one reason why smokers gain weight after they quit: Food all of a sudden tastes awesome, because they can finally really taste it.
Poor sleep: Nicotine is a stimulant and plays havoc with normal sleep patterns.
Poor circulation: Always suffering freezing hands and feet? Your habit may be to blame.
Increased flu risk: Smokers are more likely to get the flu and when they get it, more likely to get really sick from it.
Marriage troubles: Smokers are considerably more likely to divorce than nonsmokers.
Precancerous lesions: Smokers get sore, scaly white patches in their mouths that can lead to oral cancer.