I don’t think I would completely agree that it takes less k/calories to sustain a bigger body, but of course that would depend upon your definition on what a “bigger” body actually means.
There is a big difference between a 300 pound person at a lower body fat ratio (under 12%) and a 300 pound person at a high body fat ratio (above 35%). Assuming both people are of similiar genetic disposition.
For example;
– A 300 pound man that has a 12% bodyfat ratio, could probably eat 4,000 k/calories a day and not gain weight (because his additional muscle mass is burning a lot of extra calories).
– A 300 pound man that has a 35% body fat ratio, will gain weight on an 4,000 k/calorie diet.
—At Rest, Fat burns about 2 (that’s right two), k/calories per pound/day.
—At Rest Muscle burns about 50, k/calories per pound/day
So Carrying even an additional 10 pounds of muscle on your body, can net you a “burn” of 500+ k/calories a day. 20 pounds of muscle = 1,000 k/calories, etc. Easily enough for a handful of beers š
A prime example of this, are professional bodybuilders. Just an example here. Could weigh in at 280 pounds at 6’0″ and be carrying an 12% bodyfat ratio. They are known to eat 8,000 – 10,000 k/calories per day, and still have their abdominal muscle wall being visible.
A 280 pound 6’0″ man with 35% bodyfat, would ballon up to horse size status in just a couple of weeks on 10,000 k/calories a day.
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Like Chris says, the fitter you are, the harder it is to lose that extra weight.
Everyone burns the same amount of calories, (unless their is an underlying medical problem (thyroid, liver, kidney, etc).
But the only reasons that it gets harder to lose more and more weight, is because people fail to adjust the following,
-a) lower their caloric intake or,
-b) increase their training frequency/intensity.
That is why mixing up routines and keeping your body in a “shocked” state, so your body doesn’t know what is coming next.
Ok, I have to go back to drinking my vodka now š