The addition of creatine supplement to the post workout boosters increases the reconstruction and recovery of all tissues. Creatine as a buffering agent, neutralizes toxic compounds produced during intensified muscle work, thus leads to better recovery after exercise session. It also provides an anabolic environment through proper hydration and adequate amounts of ATP production. Other substances, added to the post workout boosters, are often arginine, leucine, iso-leucine, valine, glutamine, and complex carbohydrates. They more intensify anabolism and protect from degradation of existing muscle structures. Besides, there are effective means of reinforcing the immune response, which is crucial for the progress of training, when a body weakened with exercises.