Yoga is a science. Yoga has nothing to do with any particular religion. As there are physical sciences to create external wellbeing, yoga is the science for inner wellbeing.
One of India's most respected Yogis, Sadhguru Jaggi Vasudev, has developed and released a comprehensive series of yoga programs through Isha Foundation. These programs can be seen as simply a way of achieving health and fitness, or as a means of enhancing performance in day-to-day life, or they can take the student on a deep spiritual journey.
Hatha Yoga is about creating a body which is not a hurdle in one’s life. The body becomes a stepping stone—not a hurdle, not a roadblock—in one’s progress of blossoming into his ultimate possibility.
“We teach Hatha Yoga as a transformative process. The transformation will not only be on the level of your body but in the way you are.” -Sadhguru