What Are Branched Chain Amino Acids and Do They Help Muscle Growth and Recovery?
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By: Mark Sisson
I remember back in the day, you’d see all the bodybuilders at the gym sipping on purple water from those clear shaker bottles. They were drinking water spiked with BCAAs, or branched chain amino acids, the idea being the BCAAs provide your body a steady drip of amino acids to maximize muscle hypertrophy and stay anabolic all day long. Heck, even I sipped the purple water when I was trying to gain mass. In more recent years, BCAAs have fallen out of favor, or at least become less “vital” a supplement for people interested in gaining muscle.
However, branched chain amino acids are still among the most crucial amino acids for human health, metabolism, immunity, and hypertrophy.1 Without adequate intake of the BCAAs leucine, isoleucine, and valine, we won’t be able to activate all the metabolic pathways we need to generate energy and utilize macronutrients. Our intestinal health suffers. Our immune system grows sluggish. And, most importantly, without BCAAs we won’t be able to trigger the mTOR pathway necessary for muscle building and repair.
That’s what everyone cares about when they talk about BCAA supplementation: muscle growth and recovery. That’s why the purple water was so common. So, what’s the deal? Do BCAAs work for muscle growth and recovery?
