 So my girlfriend is a cardio bunny she runs a lot and I've read the book and you know and I really think you've done a great job articulating some of the things that I haven't been able to get across. But there's just one other thing we always talk about muscular adaptation versus the cardiovascular adaptation and I've always tried to explain that why muscular is more important and works more but I've never been able to get that across because she's always talking about you need more oxygen up taking VO2 max and could you just explain the difference there and what's that's about? I will as best I can you know what I just realized Anthony is I apologize I have a nervous habit of clicking these pins in all my own videos I'm just always pissed off because I'm standing there clicking the pin right over the microphone so I'm gonna put this down so I stop doing that at the very end of this whole talk so hopefully you're able to edit some of that out but to answer your question her question is not even correct okay because it's predicated on several false assumptions that are predicated on other false assumptions and the biggest false assumption that came out of years of you know aerobics based research is that somehow this part of metabolism the oxygen using part of metabolism is somehow uniquely hooked up to the cardiovascular system where the rest of this isn't okay but I'm gonna have to pick up the marker again but I promise not to click it but the thing is you got to realize is that there's physiologically no way that you can take just this part of the metabolism in your cells and have it hooked up to your heart everyone thinks that aerobic equals cardiovascular to the extent that we don't have aerobics rooms anymore we have cardio theaters aerobic and cardio has become interchangeable in people's lexicon is just not true because there's no way that you can isolate out this portion of metabolism and have it connected to the heart and the blood vessels what you got to realize is that the heart and blood vessels support the metabolism support the entirety of metabolism this whole thing and the only way that you can get at this entirety of metabolism or what I like to call global metabolic conditioning is by doing mechanical work with muscle and to the extent that you do a higher quality of mechanical work with muscle the higher the quality of the cardiovascular stimulus is going to be okay remember what we said even if we were going to it take her assumption that aerobic equals cardio even if you do this you can only ramp up cardio maximally if you give it substrate at the fastest rate possible that it can do it and then afterwards that gets converted back into substrate and continues to ramp that up but the bigger issue is that these cardiovascular improvements the vast vast majority of everyone has it in their head I do this exercise and something gets better in my heart and blood vessels and that's true to some extent but it's way way overstated the vast vast majority of cardiovascular adaptations that you see my resting heart rate of 48 is not because of something so much that happened in my heart in blood vessels but rather that is an autonomic meaning central nervous system automatic it's an autonomic adjustment to changes that have occurred at the cellular level within the muscle itself okay so what you're perceiving is oh I got a low resting heart rate and you know my blood pressure is low and my heart rates low and all that's good markers for health is not really something that's happened here it's the fact that all these enzymes that make all this happen and these linchpin enzymes that keep the whole process going and lactate dehydrogenase and pyruvate dehydrogenase all those enzymes can up regulate and become more powerful and more efficient and when that happens when that's more powerful and more efficient this has to work less hard and that's borne out through the parameters that we measure but it's not because of something that specifically happened there all right last question that it guys thanks so much it's been an honor