These acids are the building blocks of protein and they are what really make muscle. It is important to include them in your supplement regimen. They can be used for many things, including as energy sources, anti- catabolic agents, performance-enhancers, and as a way to maximize the Abs on the Go effects of hormones in the body and increase lean body mass.
What started the free-form amino acid bandwagon moving? Athletes learned that these amino acids would help increase the production of the growth hormone and, indeed it does. It also stimulates the production of protein, keeps it from breaking down, and has anti-catabolic and anabolic effects on the body. It's a win-win situation!