I am a 20 year old female. athletic build. I do cardio everyday (eliptical, treadmill, running outside) for an hour or so. Today I just started a strength training plan that will last for twelve weeks. It came with meal plan information and how to calculate how many calories to eat everyday. It is telling me that in order to lose body fat I should eat 2070 on a day that I workout. I normally eat 1700 calories and this seems like so many calories to me. I am worried that I am going to gain weight and I do not want that to happen. Any advice?