Medical Infrared Thermography (MIT) is a safe and cost-effective technology that monitors physiological functions related to skin temperature control without using radiation or contact. It has been successfully used in veterinary medicine to detect injuries in racehorses and monitor their health. However, its application to human athletes is less common. Athletes face physical stress during training and competitions, leading to overuse reactions and minor traumas. Early detection of such injuries is crucial to prevent further harm. MIT is found to be most beneficial in screening individuals for overuse injuries. The following research focuses on the use of MIT in clinical practice, especially in sports injuries and exercise-related physiological functions, with case studies demonstrating its applicability.