What is the fine-grained topic of the following text: I have this theory that they put some sort of magic dust in the vents that keeps you coming back for more, but joking aside it’s really to do with the overall amazing offering of the BYC experience and also the lifestyle that yoga gives us (but seriously I still have my suspicions about the magic dust). Only return the topic.
The addictive and rewarding experience of BYC yoga and the potential use of "magic dust".