Energy drinks can provide a literal boost — via the caffeine they contain — but overdrinking them can be harmful, especially ...

Yet the rising popularity of energy drinks, which have the highest concentrations of caffeine of any beverage, have adverse health effects from overdrinking, especially among youths. (download ...

10 MINUTES: Once you consume an energy drink, the caffeine begins to enter your bloodstream, which increases your heart rate and blood pressure. 15-45 MINUTES: The caffeine level in your ...

10 MINUTES: Once you consume an energy drink, the caffeine begins to enter your bloodstream, which increases your heart rate and blood pressure. 15-45 MINUTES: The caffeine level in your bloodstream ...