Kenneth Jay's VO2max protocols have already become an underground legend in the world of advanced strength and endurance training. Now, here is the complete theory and battleplan for forging that heart of elastic steel—from the Viking warrior himself."It's not often in the world of physical training that something comes along so special, so unique, and so effective that it causes a paradigm shift in how people train and think about training. Louie Simmons turned the powerlifting world upside down with his inspired reinvention of how to train the powerlift. Pavel did the same thing and more with the Russian Kettlebell Challenge. And now, Kenneth Jay has taken the Tsar of the Kettlebell lifts—the kettlebell snatch—and created a method of training so revolutionary that it causes us to rethink everything we thought we knew about cardiovascular training and how to incorporate it into our strength and conditioning programs.The training program really forces you to hit on all cylinders at once: speed, power, efficiency of movement (you can't go fast if you're inefficient), mental and physical toughness, and, of course, the cardiovascular system of a miler with the muscular power of a gymnast. What a great combination!"—Mark Reifkind, Master RKC.