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Caffeine is a psychoactive drug and stimulant, we must clarify that it is a legal drug. By popular, has always discouraged consumption, but bear in mind that we use. Normally, caffeine is consumed by coffee or energy drinks. The typically consume those who need caffeine to wake up to go to work or to study more concentrated. It also has a sports purpose, most athletes know its advantages, but there are. Bodybuilding caffeine helps the contraction of certain muscle fibers. On the contrary, caffeine impairs blood pressure increasing it.