Sterling Yoga has wonderful, nurturing teachers who individualize instruction to meet your needs. I also belong to another gym in the area, but these yoga classes are the most strenuous thing I do; holding poses is not for sissies. I originally started because Sterling Yoga had weekend classes and most gyms have next to nothing on the weekends. I am in a beginner class and especially enjoy the restorative yoga exercises. I understand that Sterling Yoga is one of the few places that offers restorative yoga to help with problems such as back pain. There is also chair yoga for older people.