For a while now I've seen several forums on the topic of eating more to lose weight. I pretty much stayed out of it because I never really understood what it was all about. I just thought that as long as I ate 1200 cals a day I would lose....After my recent weigh-ins I started to question the whole 1200 cals thing, and decided to look more deeply into this whole BMR & TDEE thing...Here's what I've found (I'm no expert...this is just from one day of research):
What is BMR? Basal Metabolic Rate is the number of calories you burn in a day when you do absolutely nothing. In effect, this is the number of calories your body "needs" in order to keep your organs functioning and keep you breathing on a daily basis.
The theory is that you need to eat AT LEAST your BMR calories every day. And depending on your activity level, you will need to eat more to fuel your body.
To find my BMR I went to this website:
http://www.fat2fitradio.com/tools/bmr/
My BMR is 1430. That's the number of calories my body burns if I just sit and watch tv all day.
Now that the BMR thing has been explained let's move on to the next component...TDEE.
What is TDEE? Total Daily Energy Expenditure is the number of calories you need to consume per day to maintain a certain weight based on your activity level.
Here is the TDEE chart that was generated for me based on my goal weight of 130 lbs:
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What this means is that if I were 130 pounds (my goal weight), I would have to eat 1673 cals on a day that I do nothing to MAINTAIN that weight.
Since I am not yet 130 pounds, I can subtract a couple hundred calories (no lower than my BMR) to lose weight faster.
The idea is that by eating as if you were the weight you want to be, you will get to that goal in a safer way. As one poster on a forum said: "Dieting doesn't work. Why? because you cannot eat 1200 calories for the rest of your life. its not fun or sustainable. Go for slightly slower weight loss for life!! You will learn how to eat to be the size you want." That's why many of us lose the weight and then put right back on. The whole point of the BMR/TDEE method is that you're not on a diet...you're just eating the number of calories it takes to maintain your goal weight.
Combining the BMR/TDEE principle with MFP: If you're like me, MFP has set your daily calorie intake to significantly less than your BMR, so if you want to do the BMR method all you have to do is change your settings. You do that by choosing the custom setup instead of the recommended.
There are 2 routes you could take:
1. You can set your daily calories based on your activity level without working out. (This is the route I would choose, because although I work out 6 days per week, I exert different amounts of energy based on my routine for the day). If you choose this route you will still enter exercise into MFP and EAT BACK THOSE CALORIES.
2. You can choose your daily calories based on how often you work out. If you choose this route you will NOT log exercise into MFP and DO NOT EAT BACK EXERCISE CALORIES.
Moving Forward: I do not want to write off the MFP method just yet...I'm moving into week 4 of being serious about my workout routine and eating habits. I started on April 23 at 137.6. I've gone up and down since that time and as of my weigh-in yesterday I was 138.2...that's UP .6 pounds. I have decided to finish out the month of May eating 1200 calories, just to get a consistent look. Whether I lose or not, starting June 1st I am upping my cals to match my BMR. At the end of June I will compare the results and decide which method works best for me.
A Final Note: What works for some does not work for all. That's why I've looked into this and am going to try it for MYSELF. If you're one who has been thinking about the methods listed here, I would suggest you do the same.
Thanks for reading! I hope this helps someone else who is just as confused as I was :-)
Posted on 2012-05-12 by FitnessDivaK
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