If you’re having a hard time focusing, especially right when you quit, drink a few cups of coffee or caffeinated soda to help you keep that level of mental performance you had while smoking. But be careful. Your body doesn’t process caffeine very well during the first few weeks after you quit smoking. Caffeine effectively doubles in your blood when you quit, meaning that a harmless soda or cup of coffee packs twice the punch as it used to. Make sure not to drink them too close to bedtime or you’ll have trouble sleeping. Of course, we don’t recommend drinking coffee if coffee is a trigger for you to smoke.