A quick question about ramadan? (FOR MUSLIMS)?

Usually i do participate in fasting every ramadan but now im 15 and ive been weak and skinny i mean very very weak and skinny and tall my whole life and the rest of my family brother dad mom and sister are all big and strong and have some extra fat like a healthy person and after last ramadan was over i got even skinnier and weaker so when last ramadan finished (september 2010) ive been eating twice as much and larger meals and lean meats and protiens and vitamin rich foods to help gain some weight and muscle and fat. And i wouldnt want to undo all that hard work (ive gained a little weight but i am still very very skinny and weak) i dont want to stop the progress im trying to make in gaining fat and weight by participating in the fast during ramadan coming up so would it be okay for me to not fast and continue eating the way i have all day and everyday during ramadan. Or would it be against the way of the tradition and religion and a bad deed to do. and would it be rude to my parents brother and sister? To eat while they are starving themselves? Can i skip fasting this year to continue my goal? Or should i not worry about it during ramadan and fast like everyone else? Thank you !