| Also, note that eating less than 1200 cals per day can have very negative effects to your body.
Upon eating less, your body thinks there is no food. It will then try to hold on to any energy you feed your body. Therefore, at the end of the day, you're losing nothing. Then when you start eating regularly, which you will eventually do since it's very hard to maintain a 1000 cals diet without wanting to shoot yourself in the face, your body will think food supply has returned to normal, and will start to store fat again.
Also, you lose muscles, which is the most important thing to losing fat and keeping it off. You don't lose fat when you're on a starvation diet.
So in order to stop this, eat 5-6 meals per day. So take your BMR - 500 / 5-6 meals, that's how many calories you consume per meal. You eat 3-4 hours apart, and your metabolism is boosting to the max. You're burning energy since your body is breaking down the food, and you don't feel as hungry all the time. | 
