Who energy drink will not cause you to crash, Red Bull, Monster,Amp,Rock star, or Hiro Energy?
They all can cause you to crash. One of the reasons people experience the crash is because they drink the energy drink fast causing you to get too much caffeine. FYI guarana is used in some energy drinks and this contains caffeine. To avoid a crash try drinking the energy drink slowly, otherwise find one without caffeine in it such as Hair of the Dog or some XS energy drinks.