Rather, I can't link on my iPad, but google Tim Noakes. He is a south African marathon running guru chap, who recently went low carb, and completely shocked the running world. I know this because my DH is doing the London marathon next year, and also queried low carb and serious training.
Also, I think for him, he felt that he couldn't run more than 10k without carb loading, but since he's done more reading, and has seen lots of stuff online about it, he miraculously can. I think it was possibly psychological the first few times. He really thought he would find it harder, so did, IYSWIM. He has since subscribd to it, and althugh he may have a banana before a long run, he is more focused on protein straight after.
On the other hand, I cannot run, although am starting to feel like I may want to!
Odd day today. Despite a few false starts, AF arrived today. First proper since dd2, and my word it is heavy (sorry, TMI). Am hoping that's why I have found today harder. Nibbled a bit of scone. Had a corn on the cob. Irritated with myself. Ironically, I have also got to the point where I look so different than even a few weeks ago. Self sabotage?