Creatine is a compound that helps to build muscle. It comes in a powdered, supplement form that you typically mix with water and drink before or after a workout. Creatine works to provide your body with more energy and this allows you to train harder--making your muscles bigger.
When you can do more repetitions of an exercise, you will get stronger, and that is what creatine gives you--more energy to do more reps! Clinical research has shown that creatine benefits those who lift weights or do other explosive activities, such as Tabata workouts. If you participate in a high energy workout, or want to get bigger and stronger, add creatine to your workout plan!