This document discusses the physiological effects of altitude training on the body. Exposure to altitude causes increased ventilation, heart rate, water loss, metabolism, and red blood cell counts. Exercising at higher altitudes improves the body's ability to deliver oxygen to muscles and enhances post-exercise calorie burning. It allows individuals to gain better fitness results in less time spent training. Altitude training is also beneficial for injury prevention, rehabilitation, improved health, and specific training programs.