More calories = more weight

less calories = dropping weight

so why is there a point at which your body "sets" and doesn't really go up or down from.

I doubt we take the same amount of calories in a day (without monitoring/being on a diet) so why can people be 150lbs their whole life, or 180, or 220.



If there is a set weight for a body, can we calculate it?


Also, if we eat 100 grams of protein daily, do we still grow from lifting? If the growth point is 1g/1lb we should be LOSING mass daily - and I know many people who do nothing of this sort. So is this just a case of muscle going away and fat replacing it? It seems there is a balance - where muscle requirement is met and the body can not go lower, the rest is fat balance going up or staying the same based on the diet.

Thoughts?

no one really knows, we've hardly begun to capture the science behind this because there's a complex interplay of physiology and psychology (and all their subsets) and the outcomes (bf%, weight, etc) all take place over the long term, which makes them expensive to study.

it's pretty clear, though, that a couple key hormones play very important roles, such that those who aren't monitoring their intake carefully or at least eating fairly monotonously take in wildly divergent amounts of food from day to day.

the easiest solution if you're trying to put on or take off weight? eat monotonously, or carefully monitor your intake.

1g/lb is not a "growth point" but rather an intake that many lifters (but few medical practitioners) believe is optimal for muscle growth. most people do slowly lose muscle mass year over year, but this has more to do with inactivity than lack of sufficient protein.

Any more ideas?