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Lost 5 pounds in 1 day! What in the world.

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Here's the background info: A few weeks ago I was stupid and tried fasting for 10 days. Well, I succeeded on doing this, but right afterwards I started eating freely whatever I wanted. I added back all the weight fasting caused me to lose plus more.  4 days ago, I decided I should take a responsible approach to dieting instead of stupid stuff like fasting, and I found this site.

Jump to today, I've been sticking to the recommended calorie intake (1900 calories per day, actually I've been going over the limit by 300 or 400 every day). I've been eating only healthy things like fruit, skinless chicken breast, plain yogurt, oatmeal, etc. with the occasional whole wheat bread.  Well, the newly gained weight came off so fast that I think it's unhealthy. Last night at around 8:00 I ate a pretty big piece of raisin bread and went over my calories by 200 calories. I figured I probably wouldn't lose any weight this time around, but when I weighed myself, I had lost 5 pounds! In fact, I've been losing about 1 pound a day for the other 3 days I was doing this. In total I've lost 7 pounds in 4 days. I know that's too fast to be healthy. I should be losing 1-2 pounds a week, right?

What would be causing me to lose this much weight so quickly? I know it seems weird to complain about losing weight, but losing weight this fast can't be healthy. 


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often when people "fast" or are in starvation mode, they quickly put on a few pounds once they begin eating normally again. and then usually, before they know it, they've lost all the weight they gained, plus more. but after your body's left "shock mode" you'll go back to losing 1-2 lbs a week, don't worry.

good for you for leaving that fasting idea behind.

Did you move the scale? Did you just go off your period? Did you weigh with your clothes off the first time and not the second?

Did you start drinking more water?

If you are eating more healthy foods and drinking more water then the majority of the weight loss is most likely due to loss of water weight and the fact that you have relatively less stuff (waste products of food) in your system than when you were eating anything you felt like.

Some people drop several pounds very quickly and then the rate tappers off. Give it a couple weeks.


If you weighed yourslef at night, with your clothes on and just ate or drank something then ususally you weigh 5 pounds less if you weigh yourself first thing in the morning naked. 2 pounds for clothes, usually weigh 2 more pounds at night anyways, and a pound for just having a meal.
monthly cycles i think- right before my period i inevitably gain, and during it all comes off, plus MORE, even with my menstral binges.
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Thanks for the advice everyone. I suppose food had something to do with it, but I had the same amount of clothes on both times. As for the period thing, I'm not a girl so I don't think that applies!
Weight that goes on fast, comes off fast.  It's all water weight in the beginning anyway.  In fact, if you weigh yourself everyday you'll be amazed at how much you can fluctuate - so it's best to weigh once per week, same day, same time. 
I'm experiencing that "starvation" mode you mentioned in one of the initial posts.  After keeping my calories very low (too low) for years, I finally decided enough was enough, and this summer, I began reintroducing more food into my diet.  Well, I'm now 132, after gaining probably around 10 lbs this summer.  I'm just trying to solely do yoga now (no extreme cardio except for when I walk to class) to see if I can get my body back into shape.  It's hard for me to want to try to get above 1500 calories, but at this point, I don't know what else to do.  When I was eating 2000 for a few weeks, plus exercise, I wasn't losing. new plan is to give my body a rest, eat more and see if that works.  Anyone else have experience with this?
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This is week 3 of calorie-count for me...and I can tell you my weight loss sounds very much the same.  I dropped a pound a day for several days...nothing the entire next week...then this weekend I lost 2 pounds.  One would think that eating 500 calories less everyday that the weight would slowly come off...but instead it seems to come off in lays flat for awhile, then drops down...levels out for awhile then drops off again.  I suppose it has something to do with the body's desire to maintain stores...but I am not sure.


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