More: Endurance athletes acidify less fast with BCAAs in sports drink 20.01.2012 Tyrosine boosts endurance performance in the summer 10.01.2012 L - Citrulline versus exhaustion 27.10.2011
Essentially, I do all of my exercise (current routine, below) in a fasted state only consuming the BioSteel's high performance sportsdrink (HPSD), which contains virtually no calories — maybe 8 kcal of BCAA per serving.