I am fourteen and a track and eild athlete like my mother. Usually she doesn't care about my weight but all of a sudden she does! She wont buy me any snack foods and comlpains about me eatind too much. When I argue back I am " talking back" and end up in trouble. How Can I make er stop?

id be like **** u !!!!!!!! ill eat whatever i want! and im not fat! if she dosent lisin then eat bhind her back

The first question is, Are you over weight? I know you do sports, but I have a friend who does every sport possible and works hard, but shes still overweight. Maybe you just don't want to deal with it and thats understandable. So it is also understandable that your mother is concerned. Maybe she recently read an article about how weight affects a kids health or something like that, so all of a sudden she wants to apring into action to help you.
But, maybe you are not overwiehgt, and for some reason your momthinks you are. If she is hurting your feelings, you should calmly talk about it so she dosn't think youir talking back. MAybe your dad or a sibling can make her understand how you feel. YOu shouldn't ket something that really bothers you keep happening.