In Mongolia, the practice of not eating meat during the summer months is rooted in a combination of cultural traditions, environmental factors, and practical considerations. Mongolia's harsh winters necessitate a diet high in meat for sustenance and energy, but as the summer heat arrives, dietary habits shift in response to changing conditions. 

During the summer, the hot weather makes heavy, fatty meats less appealing and more difficult to preserve. Fresh fruits and vegetables become more available and offer a lighter, refreshing alternative to the meat-heavy diets of the colder months. Additionally, traditional Mongolian dietary practices include seasonal variations to align with the availability of ingredients and to balance nutritional needs. 

Culturally, this practice also reflects a broader respect for seasonal rhythms and a desire to incorporate seasonal produce into daily meals. The summer diet focuses on foods that are cooling and hydrating, aligning with the body's needs during the warmer months. This shift is not just about preference but also about adapting to environmental conditions and maintaining overall health and well-being. 

Understanding these seasonal dietary practices provides insight into how Mongolian culture harmonizes with its environment and how traditional foods evolve with the seasons.