It's important to remember that the most important and effective ergogenic aid (external influence enhancing performance) is water. Alongside water, many people also choose to consume sports drinks and energy/stimulant beverages to maximise their performance capacity. Sports drinks aim to promote hydration, replenish carbs and electrolytes and prolong physical activity. They usually contain 6-8 grams/100 ml and electrolytes such as sodium, potassium, calcium and magnesium.
On the other hand, energy drinks aim to boost alertness and mental focus whilst also delivering a surge of energy. However, they contain large amounts of carbohydrate (particularly sugar), a few vitamins and (occasionally) some minerals, as well as large quantities of stimulants such as Taurine and Caffeine.
Campbell, B., Wilborn, C., La Bounty, P., Taylor, L. Mike et al. (2013). International Society of Sports Nutrition position stand: energy drinks. Journal of the International Society of Sports Nutrition.