I want to gain muscle mass, but at the same time I want to lose weight. I'm pretty skinny (muscle wise), but lately I've gained a lot of fat.. especially on my face and gut. I'm trying to get rid of my fat and gain muscle.. the question is.. can I do both or do I have to work on them seperately? Lately I've been running in the morning and lifting heavy weights in the evening and I'm on a 1300 calorie diet. Will I lose muscle by doing cardio.. and if I did both cardio & weight lifting will I lose weight and just maintain the muscle I already have or will I gain muscle? Ehhh... I dont know much about fitness or nutrition... can someone help me out? 