Pre-workout is a supplement designed to enhance athletic performance by boosting energy levels, improving strength, and endurance. It is usually taken before exercise or sport. Pre-workout supplements come in various forms, including pills, powder, and liquids, and their ingredients may vary by brand. Some common ingredients in pre-workouts are caffeine, beta-alanine, BCAAs, and creatine. The main ingredient in most pre-workouts is caffeine, which can keep you focused, give you energy, and improve your overall performance. Pre-workout supplements can help increase lean body mass, promote muscle growth, enhance muscular endurance, and improve mood during a workout. However, the efficacy and safety of pre-workout supplements are not regulated by the FDA, and some supplements could contain steroids and other ingredients banned by sports organizations. A balanced diet can give you all the nutrients you need to crush your workouts, and pre-workout supplements are not necessary for most people. If you are a competitive athlete or bodybuilder, you may find that a carefully chosen pre-workout supplement can help give you an edge.