I've just concluded my eighth week in the Zone. When I started out, I made sure to figure out my proper block allocation, based both on the Body Fat Calculator here and the information from my electronic scale (which can vary day-to-day, or even minute-to-minute, but, when averaged out over a long period of time, gives pretty reliable results). I also made sure to factor in my high body-fat percentage as an extra activity level, as Dr. Sears recommended (thus, although I was pretty much sedentary, I scored myself at a "light activity" level of exercise). My resulting block allocation was 16 per day, and I've been sticking to that as closely as I can figure, and relying on the "eyeball method" when I'm eating at a place where I can't get the nutritional data. In other words, I've been pretty conscientious about staying in the Zone.
At any rate, I'm through eight weeks. The good news is that I'm averaging around 1.5 pounds of fat loss per week -- just about the ideal maximum. The bad news is that I'm also losing LBW, to the tune of slightly under a pound a week. Overall, a lot better than where I was before starting this, but I'd sure like to be at the point where the LBW was staying level and all my loss was fat.
I've been trying to figure out what might be causing the LBW loss. All I can think of is that, no matter how well I calculated it, I'm eating too little protein to support my LBW. Maybe my metabolism is weird, or I have some other difference in body chemistry, or ??? But, I'm wondering: should I increase my block allocation by one (up to 17 for the moment) and see if that causes the LBW to level off while still losing fat? Or should I just keep with the current plan, accept the LBW loss as part of the bargain, and wait for the point where it drops far enough so that my current block allocation keeps that new, lower LBW constant?