I found this blogpost called "1200 calories". Here is the link:
Please take a look at the article. It is saying that 1200 is not the "magic" number. Women in our society have come to believe that we need to only consume 1200 calories in order to lose weight. We focus on cardio along with this calorie restriction. But, you know what? It's not enough for our bodies!
Calories are important but the quality of the food we eat is important too .We also need to focus more on strength training (gaining muscle tone) along with the cardio.
Take a look at the article. It may open your eyes to something new.