Updog Studio is enrolling participants for its second 30 Day Yoga Challenge beginning November 1, 2011. -

Guided by Updog instructors Mingli and Verena, participants are required to complete a 30-day challenge that involves intense yoga sessions (both hot and not), group classes and workshops built around six themes. There will also be a three-day optional fruit and vegetable fast during the third week of the challenge—yikes. But there's a reward: If you successfully complete 30 classes consecutively for 30 days, you'll receive four complimentary classes. 

Registration is now open up til October 25, 201 and costs $288.