Energy drinks have become more popular recently and many people enjoy them. Be warned, though: if you have heart disease or high blood pressure, you may want to choose to drink something else. Drinking two energy drinks per day causes your blood pressure and heart rate to increase, which only exacerbates any existing problems you may have.
Energy drinks contain caffeine, sugar, vitamins, and taurine. They are not the same product as sports drinks, which are made to replace carbohydrates and electrolytes after exercising. Read the labels when you are shopping so that you know exactly what you are buying, especially if you have heart disease or high blood pressure.