•PAST LIVES: Yee, 46, was once a dancer with the Oakland Ballet.
•STILL LIVING DOWN: Time calling him a "stud-muffin guru." ("No one flirts with me," he says—a good thing, since he's married. Wife Donna Fong, 44, is his business partner.)
•PRACTICES HIS POSES: 1-4 hours a day
•FAVORITE FEATURE? "My hands."
•CELEB CLIENTS: Demi Moore, Donna Karan
Duncan Wong, New York City
•BODY ART: His tattoos include an om and a dragon.
•CLARK KENT COMPLEX: "I aspire to be a comic-book superhero archetype," says Wong, 35. "I like to protect the weak."
•LOVE KNOT? Yoga is "half-clad people contorting themselves into animal positions," says Wong, who's dating an ex-student. "People can get hurt—and fall in love."
•CELEB CLIENTS: Madonna, Sting
Baron Baptiste, Boston
•SEX AND THE SUTRA?
"A lot of teachers are kids in a candy store. I got that out of my system early," says Baptiste, 39. "Me seeing students doesn't work." (He's dating a yoga teacher.)
•IN THE GENES: His parents opened San Francisco's first yoga studio; his three kids "can stand on their heads. But they'd rather snowboard."
•CELEB CLIENTS: Helen Hunt, Elisabeth Shue
Tim Miller, Encinitas, Calif.
•POWER OF THE POSE: "When you're an instructor, people project qualities on you that you don't necessarily possess: wisdom, insight, magnetism," says Miller, 52. "Women are attracted to you."
•WHAT DOES HIS WIFE SAY?
Before Miller married Carol, 44, a former student, she "would tease me that I'm a babe magnet. Now she feels pretty secure."
•BRUSH WITH FAME: He was once Woody Harrelson's stunt double on Cheers.
Rolf Gates, Boston
•MACHO CREDENTIALS: He was an Army Airborne Ranger and an EMT before taking up yoga in 1993.
"Definitely not," says Gates, 39. "I'm a husband and father [to newborn Jasmine]."
•GURU TO: The Boston Ballet