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One day : 1105 calories eaten - 2000 calories burned...?

If I burn 2000 calories in the gym (treadmill & eliptical + a little weights) M-F and only eat 1105 healthy cal. every day how much weight will I lose in two months?

Wed. Mar 12, 7:06pm

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Ummm 2000 cals / workout session means you must be exercising 2 - 3 hrs at HIGH intensity / day. Or do you mean 2000 cals burned / week ?

Wednesday, March 12, 2008, 7:09 PM

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And what's your BMR? It's all simple math, either way. A 3500 calorie deficit = 1 pound.

Wednesday, March 12, 2008, 7:11 PM

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Not as much as you're thinking - your body will think you're starving and slash your metabolism in an act of self-preservation. Plus, behaviorally, you'll end up bingeing your head off in about a week.

Wednesday, March 12, 2008, 7:17 PM

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1105? What a strange number. Where did you come up with that?

Wednesday, March 12, 2008, 7:18 PM

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7:17 - a week, you think? I say 4 days, 5 max ;)

Wednesday, March 12, 2008, 7:35 PM

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Yes, you wouldn't be eating enough calories, even without the exercise. If you are going to exercise so much (which probably is not healthy), you would even need to eat more than 1200 calories.

Life is not the Biggest Loser, and remember - they are under medical supervision, and I think the Biggest Loser book advocates very low calories, which is not responsible in my opinion (just browsed through it at CostCo). Also remember, that not all those Biggest Loser contestants have kept the weight off.

Wednesday, March 12, 2008, 8:45 PM

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DON"T DO IT! You'll screw up your metabolism.

Also, how could you possibly burn 7000 calories in 1 day from working out?

Wednesday, March 12, 2008, 10:35 PM

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The other thing is that during the biggest loser, if you notice, you will see the trainers admonishing the people who don't eat ENOUGH calories as much as they talk to those who eat TOO MUCH....

If you go at that pace, You'll find yourself exhausted after only a few days--you need to refuel immediately after exercise (not with a meal, but with a small snack)--which helps to replenish your glycogen stores... otherwise, the next day, you'll just feel like someone ran you over with a steam roller.

Binge exercising is nearly as bad as binging with food. Neither are healthy and eventually, you'll self-destruct...

Wednesday, March 12, 2008, 10:55 PM

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OP here

?Why 1105 cal. - b/c I eat basically the same thing every day except for dinner
?How 2000 cal. burned per day - run 4.5 miles + weights in am; eliptical very hard for 1 hr at lunch - that's what the machines say I am burning and I put in my #s
?BMR = about 1900 +/-
? "You will binge / burn out" I don't think so, I have been slowly working up to this excersise and down to these calories over 18 months so far I have done the above for 1 week

Will I really not lose weight??

Thursday, March 13, 2008, 10:25 AM

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You can't really believe what the cardio machine reads. I put on my heart rate monitor which is very accurate and set the treadmill. The treadmill said that I burned 300 calories more than my heart rate monitor. They can be off by quite a bit. I would suggest to invest in a heart rate monitor. There is a strap that goes just under your breasts which measures your heart rate and sends the information to a watch. Gives you you're workout length, amount of calories burned, average heart rate, minimum heart rate and maximum heart rate for during your workout.

Thursday, March 13, 2008, 11:23 AM

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This month's Runner's World says 864 for me at 1 hour of running which is what the treadmill that should be right.
It is the elipitcal #'s I don't trust. This eliptical is really hard and works your core, but 1400 calories per hour?? Can that be close?

BTW - I am a guy

Thursday, March 13, 2008, 11:30 AM

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You may eventually lose weight - just not as much as if you were doing things more healthily. Some of the weight you lose will be muscle - and you will have difficulty building muscle - because your body is not getting the proper nutrition. A woman should get minimum of 1200 calories a day and more than that with that type of exercise. That would be more for a man. You should check out a simple Calorie calculator to tell you what you need to be intaking for that amount of exercise - which would be considered heavy, in my estimation.

You will just ruin your metabolism, I think, and possibly damage your body when it starts feeding on itself.

Thursday, March 13, 2008, 8:39 PM

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There is no way you are burning that many calories, especially if you're only running 4.5 miles and doing an hour of elliptical. First, those machines are highly inaccurate, even with "putting in your numbers." They're based on generalized formulas and are meant to give you a rough approximation (extremely rough), not be used for calorie counting. A good runner in a marathon only burns about 2700 calories in their entire marathon session, so the chances that your exercise is equivalent to 2000 calories burned is unlikely.

I'm not saying this to be discouraging. I think the amount of exercise you are doing is fantastic. I just think it's not very accurate to rely on the machines to tell you how much you're burning. Studies have shown that we tend to way overestimate number of calories burned in exercise and way underestimate the number of calories consumed in eating -- even experts in fitness and/or nutrition have trouble accurately estimating. Also, as an athlete, I just want to say that you need to make sure that you are eating enough to fuel your workouts. I know it's tempting to not eat very much so that you have "negative calories" but not only is this very dangerous for your health, but it's not even very effective for losing fat because starvation breaks down protein (muscles) before it breaks down fat because protein can be converted to glucose which your body/brain needs, but fat cannot be directly used as a source of glucose to fuel your brain. I'd suggest concentrating on just getting in shape and building some muscle since not only is a pound of muscle smaller volume wise than a pound of fat (so you look thinner!) but the more muscle you have, the more calories you burn just in a resting state.

good luck!

Thursday, March 13, 2008, 9:48 PM

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