Answer:
The answer is a combination of Bandwagon, emotional words and testimonial.
Explanation:
Bandwagon because its purpose is to persuade people to do "something" because other people are doing it. The fact that it mentions ...20 million-plus Americans have fallen in love with... is a clear example of the bandwagon.
Emotional words - if we keep reading the article we will find words like; bliss, venerable, retreat for the soul, chill, etc. Those words are used to evoke positive feelings towards the product or service in the potential clients to create a need for the product/service.
Testimonial - The writer of the article is not a common person but is a Yogini (authentic practitioner of yoga) who has written books about it, thus she might be well-known among yogis. Even if the rest of the people have not heard of her, they are likely to acknowledge that she is an important person in the yoga world and that would add authenticity to its message. (she knows what she is talking about and it is trustworthy).