If you are hacking your exercise routine, dieting/eating patterns, health...etc. Understand the basics and you will go further than if you didn't. Did you check out some of the essays ? Extremely relevant to the today's top killers (heart attack, cancer, stroke, obesity, diabetes...etc).
http://www.thincs.org/Malcolm.htm#fat2
http://www.thincs.org/Malcolm.htm#lipoprotein