Exercise with glycemic intake
I am a 70 year old retired physician whose BMI has always been around 19. I have never had high fasting glucose or any other sign of diabetes. My interest in diet stems mainly from an interest in longevity and in particular atherogenesis. I cycle about 100 miles a week year 'round. My question is: Should I be concerned about glycemic index when I eat just prior or during a long ride? Many of my rides last 4-5 hours. Thanks. I absolutely love the podcast, and 2 thumbs up for Rick Johnson.
salt restriction and low carb diets
In your first session with Rick Johnson you and he don't mention the role insulin plays in renal salt and water retention. Could you address with him the problem that people on a VLCD get into with hypotension when on a 20 gram carb diet that is salt restricted. I understand you will be having him back.
Do "Zone 2/5 exercise" have any relationship with "heart rate zones" or is a completely different scale?
I'm talking about the sorts of graphics, completely based off of heart rate, that come up if you google "exercise zones", e.g.: https://upload.wikimedia.org/wikipedia/commons/a/ad/Exercise_zones.png It seems to me that when Peter talks about zone 2 that it better describes exercise somewhere in zone 3 referenced in this sort of graphic. Is his scale completely unrelated? If so, does it have a name? Or is it just a re-tweaking of this sort of scale using better break points informed by lactate levels instead of heart rate?