http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2243251/ http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookglyc.html I've been reading a bit about citric acid and it's roll in burning fat and carbs for energy. If I am understanding it correctly, the human body will turn pyruvate into lactic acid and, if there is enough oxygen leftover, citric acid. However, if there is a lack of oxygen, only lactic acid will be produced. Too much lactic acid causes muscle pain and fatigue. So, I am wondering if anyone here has tried citric acid as a supplement? If so, did it work to alleviate some of your pain and fatigue? And, which form of citric acid is the best to take? Is one supplement better then another?