There are a lot of places to eat around Tiger Muay Thai, all selling healthy things to eat. There are a quite a few cheap, small restaurants and shacks selling traditional Thai food and I think every hotel probably has it’s own restaurant too. The hotels are more expensive though.
Most places sell some variety of steak or chicken breast with vegetables and brown rice, which is the healthy go to food in the area. I enjoy mixing it up with some traditional Thai dishes though, like Pad Ka-Prao (minced chicken with chilis and Thai holy basil). You must remember to say no sugar please when you order else all your healthy eating and hard work will be for nowt!
