Love your cup of java in the morning? And then another one in the early afternoon? And another cup to boost your falling energy after lunch? How about a 4 o'clock break to wake up and finish up your work day? Well, if you follow this menu you may find that your brain is racing marathons and sprints by the time you get home for dinner. Then you can't fall asleep and even counting sheep doesn't help. What a disaster! If you drink more than one cup of coffee or any other caffeinated beverage a day, you might be overstimulating your body. Everybody tolerates caffeine differently and there is no sure test to determine the borderline. However, if you start noticing any of the following symptoms after your daily caffeine consumption, you probably are getting more caffeine than you need: