Today, many yoga practitioners assert that yoga is not a religion in their minds. This begs the question: If hatha yoga is not a religion, what is it? Is it a hobby, a sport, a fitness regimen, a recreational activity? Or is it a discipline, such as the study of law or the practice of medicine? The odd truth is that there are ways in which the practice of yoga resembles all of those pursuits.
Perhaps it would be helpful to consider the difference between the word "religion" and another word commonly associated with it, "spirituality." Spirituality, it could be said, has to do with one's interior life, the ever-evolving understanding of one's self and one's place in the cosmos—humankind's "search for meaning." Religion, on the other hand, can be seen as spirituality's external counterpart, the organizational structure we give to our individual and collective spiritual processes: the rituals, doctrines, prayers, chants, and ceremonies, and the congregations that come together to share them.
The fact that so many yogis report spiritual experiences in their practices indicates how we might best view the ancient art. While many Westerners come to yoga primarily for its health benefits, it seems safe to say that most people who open to yoga will, in time, find its meditative qualities and more subtle effects on the mind and emotions equally (if not more) beneficial. They will, in other words, come to see yoga as a spiritual practice. But, without credos or congregations, it can't properly be regarded as a religion—unless we say that each yogi and yogini comprises a religion of one.