Damn ma , you a freak <| sep |> That ' s great that you ' re active after school . What two things do you do ? Are there any mentors in that program you feel comfortable talking to ? I ' m asking because I think the situation you ' re in is difficult and lonely for a 13 year old . You sound like a really solid kid and it would be a shame if this negativity discouraged you from being healthier and happier . I have a step son who is a couple years younger than you and he is dealing with his weight . Trust me when I say I feel empathy for you . I never try to focus on his weight , rather , what activities he ' s doing to balance out his eating habits . His dad and I encouraged him to do soccer one season and omg what a difference ! He slimmed down a bit and was generally more happy not because of the weight but because he was running around being a kid and making new friends . Before , he would come straight home , play video games eat snacks until his mom yelled at him to do homework . Your parents and step parent are handling this poorly . I think it ' s smart if you to ask others for their opinions , and I think your true happiness will come from the hobbies and interests you ' re developing right now . Just make sure one of your hobbies is physical , like taking a walk or riding a bike . I don ' t have any real advice for you dealing with your parents . It seems other commenters have good suggestions !