Herman Pontzer
So, I've been listening to Bilyeu and Saladino talk with Herman Pontzer and would love to hear a conversation between you two. I've got to say, after listening to your fructose master class with Rick Johnson, I'd just really like to hear a talk that parses out the insulin-regulation fat loss model (i.e. fasting and LCHF) and how it bashes up against Dr. Pontzer's science. Cheers!
The Aging Athlete - Few HR Guidelines Make Sense
So many of us Boomers are still trying to push it, to the extent our joints allow (my joints are doing great, BTW). Unfortunately, I've had little luck identifying good training guidelines for optimal heart rate other than Maffetone podcast (thank you, very informative), which focused more on running and slowing down to speed up. Regarding other aerobic exercise, however, the training rate formulas (220-age) for maximum HR are really conservative and I've tried to research this topic with little luck. I'm hitting 65 years of age and participate in Masters Swimming; I can stay in Zone 2 for warm ups, but when doing speed sets, I do not stay below the recommendation (<155 BPM). If not already available, I think more research should be directed toward older fit individuals because our demographic is growing. I know you are focused on cardiovascular health and probably have some thoughts on this. (PS, I liked what Lance Armstrong said about swimming as an exercise for older athletes and also how staring for hours at the black lane line explains why competitive swimmers are nuts.)
Your email letter critique of TTU's "skipping breakfast" study
I appreciate your pointing out all the flaws in the TTU study, and assume there are similar issues with other studies that drew the same conclusion (e.g., the JACC study). In Part 2, I hope you address some important issues not mentioned by the study: 1) Maybe the quality of the first meal of the day, whenever that occurred, differed between groups; e.g., maybe people who eat "breakfast" are more likely to eat more fiber through cereal consumption. (You alluded to this by pointing out their problematic definition of "breakfast," and that the study demonstrated healthy-user bias.) 2) Maybe the group who ate their first meal of the day at a later time continued to eat later into the evening than the group who ate breakfast. If so, this could have disrupted their sleep/circadian rhythm. 3) The total fasting period between the last meal/snack of the day and the first meal of the following day might have differed between groups. There might be an ideal daily fasting window between dinner and breakfast the next day. Valter Longo claims that a number of studies demonstrate that fasting more than 12 hours can be harmful, although I haven't been able to find any quality evidence to support that. I'm surprised you haven't had Longo on your podcast, given his research on IF and FMD, and the interest in him by your listeners expressed in previous posts. Do you not find him interesting?