After an intensive workout, it might be a good idea to hit your local coffee bar. That’s according to a study that found that taking in caffeine along with carbohydrates after a grueling sweat session helps you recover faster by upping the levels of glycogen, your muscles’ primary fuel source. A team at the Royal Melbourne Institute of Technology in Australia had endurance cyclists bike to exhaustion and then gave them either a plain carbohydrate drink or one spiked with caffeine. Immediately after exercising, all the cyclists had the same glycogen levels in their muscles. But four hours later, the cyclists who received the caffeine-laced beverage had 66 percent more glycogen in their muscles to power them through the next day’s workout.