Those wanting to up their body’s muscle building capability will more likely go for BCAAs while those who wish to improve their body’s energy production and efficiency will go to creatine.
BCAA and Creatine: What You Need To Know

Those wanting to up their body’s muscle building capability will more likely go for BCAAs while those who wish to improve their body’s energy production and efficiency will go to creatine.
People use protein supplements for a variety of different reasons. They can range from building body mass, developing and growing muscles or to simply improve overall health.