Pre-workout supplements, also called “pre-workouts,” are meant to give you energy for when you exercise. The main ingredient in most of them is caffeine. These supplements often come in pill or powder form. Some of the ingredients in certain pre-workouts can be good for your health and your workouts. So whether you're working out early in the morning or a long day after work. A pre-workout will get you through your workout and your day without feeling sluggish throughout your workout!