How to Choose the Best BCAA Supplement for Your Fitness Goals VPA Australia L Carnitine Pure Essential Amino Acids BCAA protects muscle., EAA builds muscle., Leucine flips the protein switch, But without all 9 essential amino acids, the job isnt finished., Add electrolytes, caffeine, and L carnitine and you have RECOVERY AMINOS!!!!!!!! So typically I would drink this starting right before my workout and during the whole session, something's I have taken notice of, I can train longer and harder, definitely hydrates