His future with the team is uncertain. In addition to Larson, four other drivers were dismissed for drug violations: Joey Logano (seven times), Kevin Harvick (three times), Aric Almirola, and Paul Menard. All five drivers will be unable to drive for the next two races of their respective series. The study also found that energy drink consumption is common among athletes of all ages, genders, and sports. In fact, more than half of all high school athletes reported drinking them. The most popular brands are Red Bull, Rockstar, and Monster. Red Bull alone accounts for 25 percent of all caffeinated beverage sales in the United States. Too much caffeine is toxic to humans in small doses; at higher levels it can trigger heart failure, seizures, and even death. According to researchers, this increase in caffeine use by athletes is related to its performance-enhancing effects. However, any benefit is usually outweighed by the risk of adverse effects. Children, teenagers, and young adults are particularly likely to experience symptoms of a caffeine overdose.