Hypoxia training involves exercising in low-oxygen environments to enhance athletic performance. This method simulates high-altitude conditions, where the air contains less oxygen, prompting the body to adapt by increasing red blood cell production and improving oxygen delivery to muscles. Athletes often use hypoxia training to boost endurance and stamina. Techniques can include using specialized masks or training in altitude chambers. The goal is to improve overall fitness and performance, especially for sports that require sustained physical effort, such as marathon running or cycling.