First off, be happy with you, i cant say this enough, i see so many people here who wonder what others think, who cares? but if you do care then dont be hungry, instead just work more, there are a number of things you can do, heres a fun game, set a record in something, like number of jumping jacks you can do without stopping (my record is only 350!) then try and break that record every day, even if you dont the attempts will get you in better shape.