After yoga class yesterday, my instructor complained to me that I was burping too much in class. She saw a sparkling water bottle, which actually had tap water in it, and she assumed I was drinking sparkling water during class. In fact, this is a longstanding issue for which I've unsuccessfully sought medical help.
Nevertheless, she recommended that I drink less water during class. From everything I can tell, that is bad advice. By email, she offered a rationale from ayurvedic alternative medicine:
The main reason being what’s known as agni (the digestive fire); we stoke that fire through the course of practice- which is why yoga is generally helpful in jumpstarting the systems of the body- it wakes up both appetite and sluggish digestion and more. There is a big process of digestion during yoga practice as Agni also refers to the digestion of thoughts, emotions, experiences. So drinking large amounts of water “douses” the fire of both physical digestion and breaks the thread of concentration that we try to cultivate during yoga.
To be blunt (which I wasn't with my instructor), this sounds like quackery to me. Nevertheless, I am wondering if I should place my trust in her advice? For one thing, maybe she knows what she's talking about more than I give her credit for. (I don't know what happens during yoga teacher training.)
There's also the matter that I've otherwise enjoyed her yoga classes, and I fear that a teacher-student relationship is untenable if I don't trust her advice.