Well, after 6 weeks of not crashing, I finally crashed on Easter. I'd gone to a baby shower on Saturday involving a 2-hour ride each way, plus the shower. I was glad I went, saw a niece I had not seen in a long time and other people and just had a good time. Actually I felt remarkably well that Saturday. So - the BCAAs and glutamine didn't prevent the crash, although recovery was still markedly shorter than just a year ago. I've figured there's a couple of possibilities for why I crashed: (1) I finally reached my new energy threshold on the BCAAs and glutamine. My prior threshold was 3-1/2 hours of light activity. (2) I'd had an intestinal bug for 2 weeks prior to the shower, and maybe it prevented absorption of the BCAAs etc. (3) I'd taken about a teaspoon of chia seeds a couple of nights in a row. Chia is very high in tryptophan, and according to the articles I read about BCAAs and crashing, PEM has to do with high tryptophan-low leucine ratio, so maybe that was a factor; and (4) maybe none of the above. I still have more energy than prior to starting the BCAAs, I also re-started DMG (one 125 mg. capsule a day). This stuff is strong, I can feel it. But I seem to be doing okay with it. I did some reading about DMG and CFS and found a post by Richvank where someone asks him about it, and he says it helps the methionine synthase - I didn't really understand the chemistry but think it essentially helps with methylation. I wish Rich had mentioned DMG in his protocol. TMG did nothing for me. Anyways, I'm still taking the BCAAs and glutamine, and now DMG, and will see how much I can do now. My digestive tract is finally (!) getting back to normal. I was taking inosine, which also helped my energy, but the DMG seems to be better. I may try both soon, but one thing at a time.