Intermittent Fasting (IF) is great. I really found that it was more helpful to read up on Ketogenic cycles and Autophagy (the process of removing waste/toxins from cells). Check out Bulletproof Executive and look up some papers on PubMed on these. They are great!

http://www.ncbi.nlm.nih.gov/pubmed?term=autophagy%20fasting

I have found that, after moving away from the Slow-carb diet and moving towards a more Paleo diet, I have more energy, can sleep less, and perform better.

More importantly, I want to help with things like not wasting the vitamins I ingest and help my dental health. Thus I have been trying to not have hardly any gluten or even legumes and oats because they contain Uric Acid, which prevents the body's ability to process vitamins in the gut. See: http://www.ncbi.nlm.nih.gov/pubmed/21501233, http://www.ncbi.nlm.nih.gov/pubmed/16643619, http://www.gout-pal.com/lowering-uric-acid/2009/08/