“Ever heard the stereotype of body builders eating bowl after bowl of cottage cheese? There’s a good reason for that,” White says. A half-cup of cottage cheese contains 15 grams of filling, muscle-building protein. Also, in a 2014 BJM Open study of 612 cheeses, it was found to be the lowest-sodium variety. As a rule of thumb, cheeses that are soft and less aged tend to be low in sodium.