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Nutrition/Weight Update

So Tuesday morning I had my resting metabolic rate (RMR) tested. This measures how many calories I burn daily, just to keep my body alive.

I had it tested previously, about 5 years ago at UT. I was 23 then, and weighed almost exactly the same as I do now (+/- 1-2 lbs). I was tested in May, and had run my first marathon earlier that February. I tested at a RMR of 1475 calories/day. They said to add about 300 calories/day for a normal desk job and normal daily activities, not including exercise. So, that had me at 1775 calories a day. That has been the number I've been using for the last 5 years.

When I got retested Tuesday morning, I was left in a state of shock and feeling like I can never eat again. I was tested at 1296, and this person said to only add 130 cal/day for normal activities, so I'm at 1426. That is 350 calories less than what I thought I was burning. I've been eating an average of 1600 calories a day since the new year (about 1400 on weekdays, more on weekends when workouts are longer) and have not really lost any weight. That is the reason I wanted to get rested in the first place.

I have been exercising on average 6-8 hours a week right now. Now, according to the new numbers, I have to eat 1200-1300 cal/day AND exercise to lose weight at the rate of 1 lb/week. My doctors still haven't figured out my heart issues, so that could be coming to play here too, but I'm just shocked that I dropped that much over 5 years when I would only consider myself more active now and I'm the same size. My body composition test will help give more info too - as in if I really have lost muscle so don't burn as many calories, but gees!

This morning I was finally down a tiny bit, .8 lbs. I have only eaten 1200 calories/day for the past 3 days, and worked out 1-1.5 hours each of those days. Also, it sadly took me 3 weeks to lose that .8 lbs. At this rate, I don't know if it is even worth it, but I also feel like now if I even eat like I was before (1600-1800 cal/day) I will end up gaining weight.

So essentially it seems like my metabolism is shot, which just isn't cool. I'm not sure why it is shot, and I doubt anyone can give me a definite answer. Could be whatever is going on with my body, could be that I've lost muscle mass, could be that I've dieted too much lately. I will at least know about the muscle mass soon enough - I'm getting DEXA done again next weekend in Austin.

As far as the challenge at work, I'm "back in the game" this week. Last week despite being less than I was the previous week at home, I mysteriously gained weight here at work. I don't trust the scale they are using here as far as I can throw it, but I guess I just have to remember it can be off for everyone.

Comments

Benson said…
That 'too much dieting' you mention might have thrown your body into conservation mode and thus lowered your BMR and calorie needs. I hope you can get the heart issue worked out and get yourself kickstarted back up to good eating, exercising and healthy weight loss goals.
Best Wishes.
Anonymous said…
Hmmmm, not being scientific or medical here...but can some of it be getting older also? I always thought that around 30 or so you start slowing down and have to eat less to stay the same. You aren't 30 but you are getting closer to that range. All the other things you mention are very real issues and possible causes, but speaking from experience, I know my calorie intake has had to drop over the years. And once you are really old like some of us....I think just looking at some food can add weight!

Bob L.
CoachLiz said…
Gads, I guess I should go get my RMR done as well. But since I have had all but meat, eggs, rice, beans, and veggies stripped from my diet, I would have to work hard to eat too many calories with the classes that I teach.

Keep us updated on the DEXA when you get it done.
greyhound said…
What Benson said. I have read in more than one place how dieting can cause the body to go into preservation mode, especially in females, that are already more biologically equipped to store fat. Rather than simply accept these numbers as gospel, perhaps there is a way to jump start that resting metabolic rate--don't know, weights, lots of small meals throughout the day, . . . get someone involved who does athletic nutrition counseling, not just someone that helps sedentary people plan their diets.

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