I think it could be either your metabolism problem if you are not losing weight even with 1200 calorie diet. Have you checked your resting metabolism rate before (RMR)? I have read some where that in order too boost your metabolism, you should :
- take small and many meals a day, separate at least 2hours between each meal. It seems that you are taking huge meals.
- build muscle density, which you have been doing... but are you sure you are doing it right? If you are following dvds or advices from a trainer, then I think you are doing everything correctly. If this is the case, the reason that you do not lose weight could be due to your increasing muscle mass, which is a good phenomenon.
- drink lots of water a day to ensure your body is working at the optimum level
Hope that this helps
My daily routine :
Diet - Follow the free 7 days diet plan from the Calorie Shifting
website (a very useful diet plan
Exercise - Monday, Wednesday, Friday = swimming,
Tuesday, Thursday, Saturday = jogging (around my house), Sunday = Yoga