Unless you're four feet tall, what whackjob doctor put you on a 1,000 calorie a day diet?  Very low calorie (VLC) diets are generally used by doctors when the risk to the patient of being overweight is greater than the risk in losing weight too quickly.  If your picture is accurate and you weigh 136, I can't imagine any doctor in their right mind telling you to work out that much and eat so little. 

edit:  So, YES, please increase your intake to at least 1200.  Set your activity level to "sedentary", then log all of your exercise.  Aim for a 500 calorie a day deficit between your burn and what you eat.  If that doesn't work after a few weeks, increase the deficit a bit.

Yes, it is hard to believe any doctor would make that recommendation, no matter what the combination of nutrients in the diet is. I would really encourage you to seek a 2nd opinion. What is the plan for making a transition to a normal lifestyle? What will happen when you get to maintenance? I am guessing that you will start to gain and then go back to the doctor for help-more money in the doc's pocket, if you ask me! This plan creates a sort of "captive audience" for the doctor--folks who think they can't lose weight without him/her.

I don't think you need to worry about "faster" weight loss. I'm surprised you haven't plateaued yet. But, trying to lose faster, even on a healthier weight loss plan, may be hard, too. Our bodies just don't like to let go of that extra insurance (ie, fat) easily. It's an evolutionary thing. Think healthy, livable plan and slow loss.

You've done well thus far and I hope you won't freak out if things reverse a bit when you switch to a healthier plan. Your metabolism will need to adapt to a more normal intake. It will be worth it, however, in the long run.

Good luck, and please see another doctor!

thanks for the advice guys!! their plan is after ive reached my goal, they will put me on a maintenance stage of 1,300 cals.....which...i kinda think is too low maybe. i've gotten used to the 1,000 cal diet and im def. not starving, but after all the things ive been reading, i think i should talk to the nutritionist there, esp. since i work out a lot a burn off more than half of those calories from daily life and exercise!!

1,000cal a day is waaaaay too low... I don't even know how you could work out so much with so little energy, and not binge like crazy.

a year ago I was 104lbs and wanted to lose 4lbs to get to 100lbs so I dropped my calories to 1000cal a day and you know what, it took me 6 months, yes SIX MONTHS to get to 100lbs a day... now ask yourself, is that worth it?? I don't know why I would suffer through that!

funny thing though is that I lost about 12lbs on a 1200cal a day diet (from 117lbs to 105lbs) and then plateaued, so I dropped my intake to 1000cal became anxious and obsessive, took forever to lose weight, then I dropped to 700-900cal and lost weight rather quickly (eating disorder, don't get any ideas)... but this really makes me question the number 1000, it's like the point where your body realizes that it is starving and holds onto every ounce of weight you have for dear life.

soooooooo many people on this site have had great success losing while upping their intake... why? because your body doesn't think that it is going to starve and will let go of excess weight... and when paired with regular (not excessive) excersize the pounds should come off easily.

trust me, eat more... this is no way to live... do you really want to go through life on a "diet" forever, I hope not.

As for me I GAINED 15-20lbs on 1200cal a day, after dropping to 87lbs, but then I decided that "fine if I am going to gain then I might as well gain on a decent amount of calories!" I upped them to about 1800cal and am maintaining about 105-108lbs... I do hope to lose a few pounds in the future, but I refuse to restrict to ridiculous amounts... healthy diet and excersize is my new motto