Sleep

As smokers, we were accustomed to receiving doses of nicotine and approximately 4,000 other chemicals 20 to 40 times a day. The stress of abruptly cutting off that supply, as unhealthy as it was, can leave us feeling extraordinarily fatigued.

• Chemicals in Cigarettes

If you're tired and can manage it during the day, take a power nap, and go to bed a little earlier than usual if you need to. Your body is working hard right now to overcome the effects of nicotine withdrawal, and some extra sleep will do you good.

• Tips for Great Naps

• Top 10 Health Benefits of a Good Night's Sleep

On the other hand, if you're at the opposite end of the spectrum and find yourself unable to sleep, which is also a common side effect of nicotine withdrawal, try taking a long walk several hours before bed.

• Managing Insomnia When You Quit Smoking