0_Apprentice
I started yoga and i feel great!
1_Wizard
It's a great practice for the physical, mental and spiritual body from India. I actually studied the practice in India myself. 
0_Apprentice
Oh then tell me about it I am just starting and went to goat yoga
1_Wizard
There are many varieties across different school and it's associated with different religious practices like Hindu, Buddhism and Jainism. The most common type people practice in the west is Hatha Yoga. 
0_Apprentice
I love that yoga is low impact exercise what else can you tell me?
1_Wizard
Well the chronology of the earliest yoga texts are unclear. But a prominent book is the Hindu Upanishads. Another ancient text is called the Hatha Yoga Pradipika. 
0_Apprentice
Ok I will have to read up on that, when did yoga become popular in the us?
1_Wizard
It would help to read a text called "How to know God", by Patanjali. It lists the basic concepts of yoga. Although it will sound very mysterious. The practice came to the West in the 20th century. 