In the last 5 months that i have been doing the curves diet plan I have found that shocking your body with the amount of calories your giving it has worked for me.
for one week you will keep your calorie intake at 1200 calories
For 23 days you will up your calorie range to 1500 calories
For 2-4 weeks you will up your calories to 2000-2500 calories
Once you get done with step 3 then go back and start step one again.