If you’ve ever browsed the supplement shelf or fitness forums, you’ve likely come across the abbreviation BCAAs. But what exactly are they, why are they so popular, and do they live up to the hype when it comes to muscle recovery, training performance, and general fitness? In this in-depth guide we’ll cover: What BCAAs are (and how they differ from other amino acids) Key benefits backed by research How they support muscle recovery and performance How to use them (timing, dosa