So I really want to start eating better and going to the gym but I need a little motivation and tips for eating healthy. I work a lot so I fall into the mistake of eating out often. People tell me I'm crazy for wanting to go to the gym because I'm thin but I don't want to lose weight at all, I actually need tips as to what I should eat so I don't lose weight while working out. I might be thin, but I'm not in shape, I used to be able to run miles now I run up the stairs and I'm out of breath. Any recommendations for workouts or foods I should try to become more fit without dropping weight??