Yoga in the United States has exploded in popularity. What was once a fringe, somewhat suspect activity for hippies, is now mainstream, with yoga studios blooming in urban, suburban and rural areas. Although to some people, it may conjure up images of either contortionists or sedentary meditators, certain styles of yoga can help people build a strong fitness foundation.
If you are interested in using yoga to become physically stronger, and to improve endurance as well as flexibility, you may want to look for studios that offer vinyasa, flow, ashtanga, or power yoga. Note that different studios may structure their classes based on their owners and instructors training and philosophy, so the terms used to describe classes may vary.
