Hi. So I Am Looking For Advice For Overall Health.

Hi. So I am looking for advice for overall health. I am a college student so the cafeteria does not provide very healthy options. I have Celiac Disease so I have to eat gluten free. My mom lives close so she brings me up food to keep in the refrigerator. I am just wondering what a normal day would consist of with meals. Like what is good food to be eating for breakfast, lunch, and dinner. And how much should I be eating if I am trying to lose weight.