My caffeine usage has varied quite a bit. At one point I was drinking a cup of coffee in the morning, some caffeinated drink during the day, and then tea in the

My caffeine usage has varied quite a bit. At one point I was drinking a cup of coffee in the morning, some caffeinated drink during the day, and then tea in the evening, around seven o'clock. When I was eating a college dining hall diet, I was drinking a caffeinated soda with every meal, plus coffee in the morning, and tea (mostly green) on average once per day. These days I hardly drink any caffeine. The transitions between these patterns have always been abrupt, and I've never felt drowsy or had a craving or headaches or anything following a reduction of caffeine consumption. As a kid I was taking 30mg amphetamine daily, which I stopped taking abruptly and had no withdrawal (I did eat a huge amount in the days following, but the drug was causing me to not eat and lose weight). I had been taking it for about 6 months. Later I was taking 54mg methylphenidate 5 days/week for about two years, and I stopped taking it abruptly and again experienced no withdrawal symptoms. Different people react differently to drugs.