They generally don't have access to a kitchen or a large refrigerator, so meals tend to either be from a restaurant (where most restaurants, good and bad, are a

They generally don't have access to a kitchen or a large refrigerator, so meals tend to either be from a restaurant (where most restaurants, good and bad, are arguably not healthy unless you severely portion-limit) or something that can be reheated in a microwave or portable air fryer. In combination, this results in a not quite healthy diet.