Many supplements touted over the years as performance enhancers have come and gone, but creatine is here to stay. We predict that it will be one of the most popular muscle-building nutrients ever made available to you. Because it works. Yes, it really works. When we told our friends that we were writing a book on creatine, some of them had quizzical responses.
Creatine is a nutrient that is naturally found in our bodies.
It is made from a combination of the three amino acids arginine, glycine and methionine. Creatine helps provide the energy our muscles need to move, particularly movements which are quick and explosive in nature. This includes the types of motion involved in most sports. Approximately 95 percent of the body's creatine supply is found in the skeletal muscles. The remaining five percent is scattered throughout the rest of the body, with the highest concentrations in the heart, brain and testes.