I wish I knew the answer to that one. I finished my 1st BFL challenge, and while I dropped BF, I didn't much in the size dept! I was also doing the BFL eating, which increased my carb comsumption to about 80-100g a day. It didn't help, and if anything I felt MORE tired when my carb consumption got too high!

You might get more answers from Lyle McDonald's forum (on another website). Do a search for his name and look for his forum.