Meditation usually follows the yoga class. I don't believe this is done at the studio per se. The original purpose of yoga was to exercise to free the body of all complaints and whining, and then once it was relaxed, one could sit down and meditate. The yoga done at a Nunda, which is where I was credentialed, does their yoga class and then has a silent period for 10 or 20 minutes. You simply sit cross-legged with your eyes closed. Believe me, it is the most refreshing process! You just feel like you are a whole new person. We don't do that enough in today's age. In my classes, we take what we call a Shavasana, which is where you lay on your back during the middle of the class to take a couple of minutes of silence to breathe. We try to put a little meditative time between some of the heavier moves. I prefer to teach this where the people can come into a class, never having had yoga, and get a quality kind of experience at a low cost.
