Whew! Although this is Mark Blanchard's "easiest" workout, it is not easy by any stretch of the imagination. At least not for those of us who were not raised in a family of yogis and doing sun salutations at the age of 3. This 60-minute workout is one of my favorites precisely because it is hard (but not so hard as to be overwhelming), and because it's 60 minutes. Many of the really challenging ones seem to be 90 minutes, and I rarely have that much time. Although the title says "for couples," there is nothing that requires two people. Mark and his wife both perform the workout, and from time to time, one will assist the other in a pose, but it's just for demonstration. I recommend this for anyone who wants to take the next step after Bryan Kest and Baron Baptiste. I bought it from Amazon.com, but I've also seen it on eBay. Grade A.