i have a question?>>>>

ummmmm, I know to lose a pound a week, you have to have a deficit of 500 calories a day from your bmr...

I could be wrong, but I'm fairly certain that your Basic Metabolic Rate (BMR) is the amount of calories you burn naturally being completely sedentary, like bedridden. So if you did any sort of walking to you car, up the stairs, anything, that adds calories burned. Then you burned another 267 through exercise. So as the bare minimum you burned 2116. Now you need to take that and subtract 500 to get the amount of calories you should eat to lose 1 lb per week. so that would be 1616 cals that you should eat. You could probably drop another 300 or so if you wanted to speed up weight loss.

Eating 925 calories once is no big deal, but if you continue to do this, you will ultimately slow your metabolism down. This will cause you to lose weight slower after the initial big weight loss you would experience. Also, once you started to eat normally again (1500-2000 calories) your body will hang on to the calories and you will just gain the weight back.

Not entirely. Your BMR is the number of cals required just to keep you alive. ie this is what you would burn if you were in a coma. What you should be using is TDEE (Total Daily Energy Expenditure). To get this you multiply your BMR by an activity factor. The activity factors are:
Sedentary = BMR X 1.2 (little or no exercise, desk job)
Lightly active = BMR X 1.375 (light exercise/sports 1-3 days/wk)
Mod. active = BMR X 1.55 (moderate exercise/sports 3-5 days/wk)
Very active = BMR X 1.725 (hard exercise/sports 6-7 days/wk)
Extr. active = BMR X 1.9 (hard daily exercise/sports & physical job or 2X day training, i.e marathon, contest etc.)

FYI, to determine your activity factor don't include any exercise you plan to add to your TDEE . That is, if you are exercising 3x a week but are otherwise sedentary then use the sedentary activity factor (otherwise you're counting your exercise cals twice).

They've all pretty much got it here. I'd emphasize only that you will need to eat an adequate number of calories each day or you will actually lose less, slow your progress, and lose lean body weight which is essential to hang onto if you intend to maintain that weight loss permanently.

For most of my clients, I shoot for a loss of two pounds a week, half of that coming from calorie deprivation at a rate of 500 calories under what they'd need to eat to maintain AND the other half of the calories coming from exercising off an additional 500 calories a day. That makes a 1,000 calorie a day deficit though exercise and diet, which after seven days equals 7,000 calories which equals two pounds of body fat.

I'll add that we're shooting for a loss of two pounds of FAT each week, not a pound and a half of fat and a half pound of lean (or any other combination that nets a loss in lean body mass). That's tougher but a great predictor of maintaining the weight loss over the long run.

And to maintain the lean body mass, and consume the excess fat stores on my clients' bodies, that means that they must eat enough calories each day and they must consume clean, healthful foods (little or no processed foods, lots of fiber from natural sources, lean proteins and lots of fruits and vegetables). That means they're full because they're eating a large quantity of really good food, and they are fueling their muscle repair/growth that is needed because of pretty intensive workouts.

This program (MFP) provides you with a good analysis of the nutritional balance of the food you consume in a day. That should help you but be sure to eat an adequate amount of calories. Running low will really slow your progress and can be so discouraging, that it can be devastating to long term success.

You have made a good start, but a previous poster was right -- it wasn't a loss of body fat. It's likely that you lost considerable water weight and (unfortunately) lean body mass. You can make that up by eating clean and at the proper level and keeping up your exercise routine. It'll work. Stick with it and you'll do great!!!

That's true about the BRM being what you would burn if you did nothing all day. But from what I can tell, this site doesn't figure any of that in (unless you add it manually). How does one go about figuring out an accurate deficit with mfp? I should mention that I'm a bodybugg user, so I'm used to knowing my real burn pretty accurately. I'm new to this site and just trying to figure it all out still...

MFP does use TDEE when figuring out your daily calorie target. If you look under Goals you'll see a box titled "Your Diet Profile". The Calories Burned from Normal Daily Activity is your TDEE. MFP then uses this to determine what your daily calorie target is based on your goal (i.e lose 1lb or 2lb a week). MFP will not set your target below 1200 though.

I know you can select your daily activity level, but that won't account for taking the stairs instead of the elevator, climbing the escelator instead of riding it, cleaning your house, playing with your kids, walking to the 2nd bathroom in your house instead of using the closest one, shoveling the snow, the extra efforts you take to get in some extra steps during the day. I sit at a computer or in meetings all day for work so my lifestyle is pretty inactive (I'd love a job where I got to move all day). So I select the lowest activity level because that's my starting point - which is where I would be if I didn't take an extra effort during the day. Do you think mfp adds in a little of the movements I'm talking about? Maybe it does. I might have to do some playing around to find out! Now I'm super curious!