Not really. Metabolism changes don’t account for that large of a swing in your BMR unless you have a thyroid issue (which is treatable).
I’ve been in the same situation as the dude trying to justify that body type, and he’s just not eating enough to be a healthy weight. You can’t be 6’6" and eat the same amount of food as everyone else. You have to eat quite a bit more.
Except you might not be able to eat that much more if your body tells you you’re full. There are a lot of factors to body weight, with studies suggesting a large genetic factor (40-70%. While theoretically you can (almost) always eat more/less and it’ll affect your weight accordingly, the difficulty of actually doing that will vary heavily by individual.
Which would only make sense if every human body processed every molecule ingested in the exact same way
Not really. Metabolism changes don’t account for that large of a swing in your BMR unless you have a thyroid issue (which is treatable).
I’ve been in the same situation as the dude trying to justify that body type, and he’s just not eating enough to be a healthy weight. You can’t be 6’6" and eat the same amount of food as everyone else. You have to eat quite a bit more.
Except you might not be able to eat that much more if your body tells you you’re full. There are a lot of factors to body weight, with studies suggesting a large genetic factor (40-70%. While theoretically you can (almost) always eat more/less and it’ll affect your weight accordingly, the difficulty of actually doing that will vary heavily by individual.
It’s something you have to train your body for.