With the current popularity of Yoga in the United States, it is unfortunately the case that some classes are taught in a manner that is not much different than an aerobics class at your local fitness center (not that there is anything wrong with aerobics classes or fitness centers). At the other extreme, there are the people that assume Hatha Yoga practice only makes sense within the context of eastern religious beliefs. My own experience as a westerner with Christian religious beliefs engaged in Hatha Yoga practice is somewhere in between these two extremes.
One of the beautiful things about Yoga is the universal nature of it. Regardless of individual religious beliefs, many different people can enter the Yoga studio and enrich their spiritual life through the practice of Hatha Yoga. One place that embodies this to the utmost is the Center for Spiritual Enlightenment (CSE) in San Jose, California:
http://www.csecenter.org
According to the CSE mission and vision statement:
The ministry of the Center for Spiritual Enlightenment is focused on the essential truth and harmony found in the world's religions, the necessity for a global ethical and spiritual awakening to bring about world peace, and the importance of individual participation toward this goal. Our vision is individual and planetary awakening to the One Truth known by many names.
I learned about CSE during my time in Joyce Anue's Yoga teacher training program. One of the other students in my class, Mary Eliason Miller, is a Yoga teacher at CSE. Another Yoga teacher at CSE, Julianne Rice, was one of the guest teachers in my teacher training program. I highly recommend both of them as Hatha Yoga teachers. The full calendar of Hatha Yoga classes offered at CSE can be found here:
http://www.csecenter.org/Pub/cgi-bin/Calendar.asp?CatID=7
If you are interested in developing a meditation practice, CSE offers one day workshops and multi-week classes to develop or deepen your own meditation practice. Personally, this is what is drawing me to CSE at this time in my own life. There are many interesting activities and a vibrant community that is very supportive of Hatha Yoga devotees like myself at CSE. I almost forgot to mention the wonderful book store at the center. I can't say enough good things about CSE.
Namasté