Caffeine can definitely be addictive, but studies have shown that humans do not seem to develop a tolerance to caffeine, but they can become dependent
. Your body will become accustomed to drinking caffeine regularly each day, so you may experience temporary side affects, like headache or fatigue, if you quit caffeine cold turkey. All of the withdrawal symptoms are short-lived and temporary so that they will disappear within a few days, and it is best to slowly cut back on your caffeine consumption to minimize any ill effects. The point is to enjoy caffeinated coffee in moderation and listen to your body to see what affects caffeine has on it to have the best experience!