A 100 hour yoga teacher training course covers almost all different aspects of yoga, including the history of yoga, health benefits of yoga, traditional yoga and modern yoga, yoga in India and yoga in western countries, yoga asanas and pranayama, yoga teaching methods, yoga retreats, and other different yoga concepts. When you enroll in a yoga teacher training course, you get to learn all these aspects of yoga. A certified and internationally recognized yoga teacher teaches you these yoga concepts in an offline class or an online class.