It is about being in a state where you are able to observe your thoughts, not think them. It’s that state of total detachment from the physical and the observation of the non-physical.
Yoga is not about that perfect pose, outfit or perfect body. It's not about being a vegetarian either or depriving yourself from every life pleasures that you enjoy having.
Yoga is a powerhouse of well-being. General components of yoga are the physical poses (asana), the different breathing techniques (pranayama) and meditation.
I think like many, I started yoga because I heard it tones your body, gives you that lean look, it’s cool, it’s fashionable and it has that mystical body-mind-soul experience.