This paper analyzes the methodology of developing endurance in judo, with a special emphasis on the physiological and energy demands of this martial art. Judo requires a high level of endurance due to intense and often repetitive efforts during matches, which last four minutes and include short rest periods. The paper thoroughly examines the physiological foundations of endurance, including the role of aerobic and anaerobic metabolic systems and the impact of lactate on athlete performance. The methodology of endurance training in judo includes various methods such as high-intensity interval training (HIIT), continuous aerobic training, fartlek training, strength and endurance training. The importance of specific exercises and match simulations that prepare athletes for real competition conditions is highlighted. The critical role of recovery and regeneration in the training process is also emphasized, including active and passive recovery, quality sleep, and nutritional support. Endurance testing through laboratory and field tests allows precise monitoring of athlete progress and adjustment of training according to individual needs. The paper presents ways in which test results can be used to optimize the training process and prevent overtraining. It is concluded that a combination of different endurance training methods, along with proper planning of training cycles and focus on recovery, are key to achieving top results in judo. By implementing these principles, coaches and athletes can improve performance and contribute to the further development of the sport.