Do you have much of an explanation for the variance in energy levels on ex150 for your various participants? I've done keto and also done 20k daily steps + resistance training but not at the same time. Indeed, during the second one I was frying a lot of rice in a lot of bacon fat. If these excellent posts manage to nudge me into becoming an experimental subject for ex150butter (I love butter, and will happily eat chunks off a knife the way normal people eat cheese) I suppose we can test how physical activity pure fat can sustain.
I think it's probably level of keto adaptation. From what I've read & heard keto (and fat) can theoretically sustain pretty much any physical adaptation, BUT: that requires way more keto adaptation. Apparently pretty much everyone gets keto-adapted to daily life in a few days to 2 weeks. But if you're doing a sport, you basically have to retrain your mitochondria nearly from scratch. That can apparently take some athletes 6-18 months, depending on the sport.
So it would make sense that the very physically active participants wouldn't finish completely adapting within the 30 day period.
I haven't directly tested the ketones, but I often feel as though I am in a state of mild ketosis towards the end of my fasting right before the beginning of my eating window every day. I've been doing a lot of strenuous outdoor projects and running them later than I would have in the past. A couple of times now I've experimented with extending my active window by eating butter. At one point, I was exhausted and hungry at 4 o clock, then I ate half a stick of butter and felt satiated and energized. I then got another three hours of work in before eating at half past seven o clock. For years now, I've been putting a fair bit of butter in my last serving of coffee for the day, around 2 o clock. However, I had not experimented with striving for satiety by just eating a half stick. So I find this an interesting little test.
Re: "Is it heavy cream? Snack/graze. Otherwise, no. If we were to introduce a more complex set of rules, variety might increase"
I'm doing something like this diet, and while I love heavy cream, I am definitely in the market for some kind of snack that has the traits of heavy cream that make it good for this diet, but perhaps has salt and a crunch, which is what I find myself craving. I am not sure what fits that profile. Maybe 0 calorie dill pickles? (no protein, no fat, a little fiber?) Pork rinds? (some protein, fat, no carbs?) Anything else? There are tons of "keto snacks" but they tend to have enough carbs (though lower than normal snacks) and protein that I think they would disrupt the essentially-fasting mechanism you have going on.
I would steer you away from keto snacks or pork rinds. I've found that the keto snacks, no matter if the ingredients are somewhat healthy or not (e.g. stevia/monk fruit instead of aspartame), are just crazy frankenfoods with all that entails, e.g. feeling terrible and being more hungry than before eating them. And pork rinds are extremely high in PUFAs due to commercial US pork being The Worst.
Something like the carrot/vinegar salad, or dill pickles, is probably the best option. It's basically just water, fiber, and flavor.
From personal experience I can say that the only functional limits on the quantity of pork rinds and stevia-sweetened cola I can consume are those imposed by time and the social stigma of buying huge quantities of each at a store. I'm willing to believe that someone somewhere has at some time been satiated by pork rinds but I absolutely cannot relate.
Do you have much of an explanation for the variance in energy levels on ex150 for your various participants? I've done keto and also done 20k daily steps + resistance training but not at the same time. Indeed, during the second one I was frying a lot of rice in a lot of bacon fat. If these excellent posts manage to nudge me into becoming an experimental subject for ex150butter (I love butter, and will happily eat chunks off a knife the way normal people eat cheese) I suppose we can test how physical activity pure fat can sustain.
I think it's probably level of keto adaptation. From what I've read & heard keto (and fat) can theoretically sustain pretty much any physical adaptation, BUT: that requires way more keto adaptation. Apparently pretty much everyone gets keto-adapted to daily life in a few days to 2 weeks. But if you're doing a sport, you basically have to retrain your mitochondria nearly from scratch. That can apparently take some athletes 6-18 months, depending on the sport.
So it would make sense that the very physically active participants wouldn't finish completely adapting within the 30 day period.
I imagine that retraining one's mitochondria would substantially accelerate the process of de-PUFAing oneself.
Interesting point, hadn't thought about it. Could very well be.
I haven't directly tested the ketones, but I often feel as though I am in a state of mild ketosis towards the end of my fasting right before the beginning of my eating window every day. I've been doing a lot of strenuous outdoor projects and running them later than I would have in the past. A couple of times now I've experimented with extending my active window by eating butter. At one point, I was exhausted and hungry at 4 o clock, then I ate half a stick of butter and felt satiated and energized. I then got another three hours of work in before eating at half past seven o clock. For years now, I've been putting a fair bit of butter in my last serving of coffee for the day, around 2 o clock. However, I had not experimented with striving for satiety by just eating a half stick. So I find this an interesting little test.
Re: "Is it heavy cream? Snack/graze. Otherwise, no. If we were to introduce a more complex set of rules, variety might increase"
I'm doing something like this diet, and while I love heavy cream, I am definitely in the market for some kind of snack that has the traits of heavy cream that make it good for this diet, but perhaps has salt and a crunch, which is what I find myself craving. I am not sure what fits that profile. Maybe 0 calorie dill pickles? (no protein, no fat, a little fiber?) Pork rinds? (some protein, fat, no carbs?) Anything else? There are tons of "keto snacks" but they tend to have enough carbs (though lower than normal snacks) and protein that I think they would disrupt the essentially-fasting mechanism you have going on.
I would steer you away from keto snacks or pork rinds. I've found that the keto snacks, no matter if the ingredients are somewhat healthy or not (e.g. stevia/monk fruit instead of aspartame), are just crazy frankenfoods with all that entails, e.g. feeling terrible and being more hungry than before eating them. And pork rinds are extremely high in PUFAs due to commercial US pork being The Worst.
Something like the carrot/vinegar salad, or dill pickles, is probably the best option. It's basically just water, fiber, and flavor.
From personal experience I can say that the only functional limits on the quantity of pork rinds and stevia-sweetened cola I can consume are those imposed by time and the social stigma of buying huge quantities of each at a store. I'm willing to believe that someone somewhere has at some time been satiated by pork rinds but I absolutely cannot relate.
Haha yea. Pretty much my experience.
thanks!