So what's the purpose of yoga. The word yoga means the Union or Uniting with something, but uniting with what, and that is what yoga tries to teach us, is that this aliveness that you feel in you, the source of this is very profound, it is not coming from your brain or your heart or from your cells, it's coming from a much deeper place and the name given to that is Chaitanya or, in English, consciousness, the source of everything, and uniting with that because we have forgotten that we came from there, and uniting with that is the purpose of yoga, and that is why the Ashtanga yoga system, eventually leads to that union, which is the purpose of yoga, and yes, unfortunately, yoga has become such a big business that is mostly taught as an exercise system, which is also OK, because that is a part of yoga and it benefits a lot of people, physically benefit to them, it helps them to control their stress levels and so on, but I wish that many more people would teach the spiritual part of yoga.
I try my best to teach in my class the internalization processes of yoga, which are Pratyahara, Dharana, and Dhyana. Dhyana means meditation. Meditation is a very important part of yoga and it's important to develop this because the purpose of yoga is union and union will happen only through the later steps of Ashtanga yoga.