Sanskrit

Sanskrit is the language of yoga. As with other languages of ancient origin--such as Hebrew, Chinese, Greek and Latin--sprirituality is a deeply ingrained element of Sanskrit.

Many yoga asana (posture) and vinyasa (flow) names are not merely descriptive. They refer to Hindu mythology. Veerabhadrasana, for example, is about a particular posture that Shiva assumes. It is about justice, not war. So the moment someone refers to it as "Warrior Pose," you can assume a certain level of ignorance on their part of the meaning of Veerabhadrasana. Other terms like Kapotasana (dove, peace and not pigeon) and Anjaneyasana (named after Anjaneya, a devotional figure) also require one to know a bit about Sanskrit and its connection to Hindu mythology.
Meanwhile, learning the Sanskrit names of asanas and trying to pronounce them is good for the brain. Here is a partial list of asanas and their meanings.