Here is an excerpt from a more complete discussion on my private blog. It is so important that I want to share at least part of the information with everyone.
Your metabolic headroom is the difference between the least you can do and the most you can do. Dr. McGuff, a frequent commenter on my private blog has a site Ultimate Exercise where he discusses recent research on gene expression and anaerobic exercise; just the thing I have stressed for some years now. Just click on the articles link in the header of his site to read his discussion of anaerobic exercise as the ultimate anti-aging technology. Go to my private blog for more on the topic. EFers have had this technology available for years.