Elevation training happens in high altitudes -- 7,000-8,000 feet above sea level. When exercising in these altitudes, less oxygen is delivered to your muscles, getting you used to breathing “thinner” ...
There’s a reason elite runners flock to towns such as Park City, Utah (altitude 6,936 feet above sea level), Flagstaff, Arizona (6,821 feet above sea level), and Mammoth Lakes (7,881 feet above sea ...