The article examines the potential benefits of a vegetarian or semi-vegetarian diet for runners, highlighting improved cardiovascular health, weight management, and reduced inflammation. It also addresses possible drawbacks, such as nutritional deficiencies, offering practical tips for a gradual and safe transition. Emphasizing careful planning to ensure adequate protein and micronutrient intake, it advocates for a personalized approach and professional guidance. Even small shifts toward more fruits, vegetables, and whole grains are shown to yield significant benefits.