The arithmetic of losing a pound

In yesterday's post I said that today I would focus on how I am going to go about losing a pound a week, or a total of 30 pounds during the balance of 2009, and how this will fit into my other goals and plans in my effort to improve my personal health and the overall balance in my life. The basic arithmetic of weight loss doesn't change much, and some of what follows is drawn from an ealier post:

As I continue to make progress in reducing my weight, I am struck regularly both by how simple this is and how difficult it can be.

Simple because, regardless of all the other issues that may effect how I feel, how I eat, and what I way, the bottom line is inescapable. I will lose weight steadily if my net calorie consumption is less than the “daily calorie requirement” that would sustain me at my present weight.

It is easy to figure out that “daily calorie requirement,” also known as my basal metabolic rate. The factors are my weight, age, gender and overall level of activity from couch potato to triathlete. At present, based on today’s weight of 256 pounds, my number is 3352 calories a day. When I began Big Man Getting Smaller at 273.5 pounds, my number was 3516 calories a day.

3500 calories avoided, in this framework, means 1 pound lost. Using today’s figure, then, if I consume 2852 calories a day I would lose a pound a week. At 2352 calories a day, 2 pounds a week. At 1852 calories a day, which is about where I have been given my propensity to forget to include my supplements in my daily log, I should be losing about 3 pounds a week. That’s pretty close to where I have been the past couple of weeks, after the predictable, more dramatic weight loss of the first week.

So all that is simple.

What is difficult? Doing it. Even more so, keeping track. Writing it down. Holding ourselves accountable.

That’s why I’m doing this blog. Should everyone who wants to lose a bunch of weight start a blog? Well, you could do worse things, believe me. I know this has been a good experience for me in all kinds of ways that go beyond the obvious immediate goal.

But whatever one does, with any serious goal, it only makes sense to figure out some way to maintain a journal about it. So I am thinking about this, and I will have some more thought about it tomorrow.

I had a terrific breakfast with my daughter Moriah this morning, and she shared some really nice news with me.

So, long story short, as I renew my efforts now in May 2009: I will keep my daily calorie intake under 2500 calories, get at least 20 minutes of regular moderate exercise 5 days a week (walking, swimming, and elliptical), and lose a pound a week.