I talked to Mark Sisson for the first time in December of last year. Here I am following up with him last week. Although the Primal Blueprint isn’t solely about weight loss, if you’re considering trying to lose weight by eating lettuce and lowfat this and that, you should listen to this. My December 2011 interview with Mark had a huge effect on listeners, whom I still hear from — they write to tell me how drastically their lives were changed by that one interview. That and more are available on my Primal page. And visit MarksDailyApple.com. But first, listen here: