Im trying to stay in shape but what should i eat?

Eat fewer calories: Healthy diets have protein foods, and natural foods that take time to chew but contain few calories. Examples include carrots, celery, and iceberg lettuce (little/no salad dressing). When shopping for fruits, buy small ones no bigger than a tennis ball, because fruits have sugar. Drinks without calories include water and green tea. Some healthy fats are ok. Avoid sugar & simple starch calories.