Calling all Philly-area yogis: This May, a Main Line studio will be hosting a person of yoga royalty, David Swenson, who will be leading tons of workshops and a yoga immersion training ...

From Hatha to Ashtanga or to Hot yoga all are competing for those who want fitter and leaner bodies, so why is it so popular? How can a group of stretching postures be so appealing? David Swenson ...