So, if you consider indulging in yoga teacher training in Bali, you are likely stuck in limbo. What should you look for? Do you have the budget to afford the training program? How long will the ...

She thinks the popularity of yoga means it's effectively a victim of its own success. "I don't think you're told very much when you're training as a teacher about physiology or anatomy," she says.

Kuperman is also a yoga instructor and director of yoga teacher training at the Baptist Power Yoga Institute in Bryn Mawr, Penn., and has been practicing yoga himself for the past 25 years ...