Quote:
Originally Posted by learning to fly
I am confused about calories...when we are losing weight faster that means we are consuming more calories (out own body fat supplies calories); but then when the weight loss slows down, we are actually using up less calories, which should stand to reason that we should be losing more, but we aren't, and that's is what I don't get....
The basic idea is this:
The bigger your body, the more calories it takes to make it work. Just for an example (these are by no means real numbers), let's say that a 250 pound person requires 1900 calories a day to function, not including any exercise. If that person is eating 900 calories a day in food, they are burning up 1000 calories a day in ketosis to make up the difference.
When that person loses a bunch of weight and now weighs 180 pounds, their body may only need 1300 calories per day to function. If that same person is still eating 900 calories a day in food, there is only 400 calories of difference that will be burned up in ketosis, which means slower fat loss.
Does that help a little? It's a VERY simplified explanation, there are lots of other factors that can change the resting metabolic rate for a person, but it hopefully helps you understand why weight loss changes when you get closer to goal.