ENERGY DRINKS: WHAT YOU NEED TO KNOW Energy drinks have exploded in popularity over the last twenty years, showing up everywhere from gas stations to college dorm rooms. Marketed as the answer to sluggish mornings and late-night study sessions, these flashy cans promise instant energy and sharper focus. But as their popularity has grown, so have concerns about what’s actually happening inside our bodies after we crack one open. What’s Actually in That Can? Most energy drinks pack a hefty dose of caffeine—often much more than your standard cup of coffee or soda. But caffeine is just the start. These drinks also contain sugar, taurine, B vitamins, herbal extracts, and other stimulants. The combination is a bit of a wild card: while each of these ingredients is pretty well understood on its own, the ways they interact—especially in the high doses found in energy drinks—are still being unraveled by scientists ( Frontiers in Public Health ; Current Sports Medicine Reports ). Heart Hea...