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I totally agree. Metabolism it's complex and not everything is well understood how is connected. It's difficult to measure and more those little contributions w

I totally agree. Metabolism it's complex and not everything is well understood how is connected. It's difficult to measure and more those little contributions where in aggregate can have an effect.

jimmywanger 10y ago
> It's difficult to measure and more those little contributions The little contributions don't matter. If you don't consume enough calories, you will not increase body fat and tissue mass. Full stop. You can retain fluid because of certain conditions that you have (I lost 30 pounds in one hour! Ask me how) but you will not be increasing fatty body mass.
- amelius 10y ago
  It's really difficult to consume just enough without your brain showing symptoms of deprivation, e.g. headaches or loss of concentration. Unless you sleep all day.
  - jimmywanger 10y ago
    > It's really difficult to consume just enough without your brain showing symptoms of deprivation What? If you eat the amount of calories that you are expending every day, you'll operate just fine. That's the way your body was designed to work.
    - amelius 10y ago
      Not every (work)day lets you burn the same amount of calories. Not every meal provides the same amount of calories, and at the same pace.
      - jimmywanger 10y ago
        I think you're missing the point. As long as your caloric intake sort of averages out to your calorie expenditure, you're fine. You don't have to balance every minute and every hour. We're designed to operate at a caloric deficit for hours, if not days at a time. We obviously don't spend all of our time sleeping.
        amelius 10y ago
        I think that's not how it works. People get headaches from lack of available calories even if they have stored energy. Eating "just enough" really requires both a skill and dedication. Perhaps what you are explaining is how it works with people who have an efficient/non-defective metabolic system. But hey, those people are not overweight.
        jimmywanger 10y ago
        > People get headaches from lack of available calories even if they have stored energy. Citation? Are you saying that some people are unable to turn fat into glycogen? Unless you're undergoing ketosis, or have a vanishingly rare metabolic disorder, that's just not true. > Perhaps what you are explaining is how it works with people who have an efficient/non-defective metabolic system. But hey, those people are not overweight. Most overweight people have efficient/non-defective metabolic systems, as evinced by the increase in obesity rates in the developed world over the past fifty years.
        adiabatty 10y ago
        I've been on sloppy paleo for a while, but I only started doing intermittent fasting more recently at a buddy's repeated urgings. I have fairly vivid memories of getting headaches sometimes after missing a meal or two in succession. After being on a paleo-ish diet for a while, I only then narrowed my feeding window to between noon and 8 PM over a couple of weeks. I've since gotten to the point where I can eat one meal a day most days if I want, but hunger headaches are a thing. (I'd still expect to get them if I were to do a multiday fast.)

I totally agree. Metabolism it's complex and not everything is well understood how is connected. It's difficult to measure and more those little contributions where in aggregate can have an effect.

jimmywanger 10y ago

> It's difficult to measure and more those little contributions The little contributions don't matter. If you don't consume enough calories, you will not increase body fat and tissue mass. Full stop. You can retain fluid because of certain conditions that you have (I lost 30 pounds in one hour! Ask me how) but you will not be increasing fatty body mass.

amelius 10y ago
It's really difficult to consume just enough without your brain showing symptoms of deprivation, e.g. headaches or loss of concentration. Unless you sleep all day.
- jimmywanger 10y ago
  > It's really difficult to consume just enough without your brain showing symptoms of deprivation What? If you eat the amount of calories that you are expending every day, you'll operate just fine. That's the way your body was designed to work.
  - amelius 10y ago
    Not every (work)day lets you burn the same amount of calories. Not every meal provides the same amount of calories, and at the same pace.
    - jimmywanger 10y ago
      I think you're missing the point. As long as your caloric intake sort of averages out to your calorie expenditure, you're fine. You don't have to balance every minute and every hour. We're designed to operate at a caloric deficit for hours, if not days at a time. We obviously don't spend all of our time sleeping.
      - amelius 10y ago
        I think that's not how it works. People get headaches from lack of available calories even if they have stored energy. Eating "just enough" really requires both a skill and dedication. Perhaps what you are explaining is how it works with people who have an efficient/non-defective metabolic system. But hey, those people are not overweight.
        jimmywanger 10y ago
        > People get headaches from lack of available calories even if they have stored energy. Citation? Are you saying that some people are unable to turn fat into glycogen? Unless you're undergoing ketosis, or have a vanishingly rare metabolic disorder, that's just not true. > Perhaps what you are explaining is how it works with people who have an efficient/non-defective metabolic system. But hey, those people are not overweight. Most overweight people have efficient/non-defective metabolic systems, as evinced by the increase in obesity rates in the developed world over the past fifty years.
        adiabatty 10y ago
        I've been on sloppy paleo for a while, but I only started doing intermittent fasting more recently at a buddy's repeated urgings. I have fairly vivid memories of getting headaches sometimes after missing a meal or two in succession. After being on a paleo-ish diet for a while, I only then narrowed my feeding window to between noon and 8 PM over a couple of weeks. I've since gotten to the point where I can eat one meal a day most days if I want, but hunger headaches are a thing. (I'd still expect to get them if I were to do a multiday fast.)