I am a student on a low budget living around Calle Arenal near Plaza del Sol. I need helping finding unexpensive restaurants where I can go for healthy, low fat food. I got a little worried about weight because friends who came here found the food so fatty they gained a lot of weight in a relatively short period of time. I like to try different foods and I definately want to try lots of Spanish food but want to stay healthy and not gain weight while living here. Also, what good restaurants are there around Calle Arenal? My lunch break is only an hour long so I need to know good, healthy places close by for lunch. Suggestions??