It isn’t unusual for a lot of people to grab an energy drink or two to get through a hard day or an afternoon slump—especially teenagers and young adults. But many people are unaware of the dangers that energy drinks present. They can even prove fatal. Teens And Young Adults Are At Particular Risk Of Harm The American Academy of Pediatrics recommends against teens consuming energy drinks at all because they contain stimulants in addition to caffeine, like guarana and taurine. Guarana is an extract that has packs additional caffeine.