I want to lose weight but I don't want to have to announce it because I think it would be kind of embarrassing to say "I want to lose weight" when I am only 13. I want to be able to lose weight without anyone knowing that is what I am trying to do. I weigh 140 pounds and I want to get to at least 120-115 by the time the next school year starts. Would I be able to lose 20 pounds in 6-7 months without anyone knowing? If so, how?