The body’s response to high-altitude exercise includes several physiological adaptations due to lower oxygen availability. Initially, individuals may experience shortness of breath and reduced endurance since the body is not receiving enough oxygen. Over time, acclimatization occurs, leading to increased red blood cell production to enhance oxygen transport. Enhanced ventilation rate and improved efficiency of oxygen utilization also develop, enabling better performance at altitude. Understanding these changes can aid in training effectively in higher elevations and mitigating potential altitude sickness symptoms.