I am a 17 years old girl and I have 1,78m. All my childhood I was very fat. I lost weight and now I want to maintain it, although I know I am too thin (approx. 50kg), but I like this way. How many calories should I eat? Somebody told me that I need 2000-2200 calories/day, but I think it's too much. I don't want to gain weight back. I wonder, 1700 calories are ok? Thanks. Have a nice day!