
Yoga's explosion in popularity has created a subset of yogi types that populate classrooms in urban centers, which can be intimidating to newbies. This yogi practices a plank pose during a paddleboard yoga session in Miami.

"The big things that all teachers hate are lateness, leaving early, and doing your own practice, " says yoga instructor Mariza Smith. "(Yogis) will kind of rock up and do their own thing." This yogi is seen practicing a headstand at an outdoor yoga class at London's Serpentine Pavilion in August 2014.

Sweaty people and really stinky feet are the worst culprits against yoga etiquette, says Smith. Bring a towel, so that teachers can adjust you and not be repelled, she says.

The "exhibitor" is another culprit in the yoga classroom. "Men in very short shorts that are extremely revealing? That's not OK," says Smith.

A "yoga strutter" who likes to be seen wearing the latest gear, is often dressed head to toe in Lululemon, says Smith. This practitioner poses at a class at the yoga retailer's Covent Garden branch in London.

"Zen yogis" often return from their sojourns in India, Thailand, Nepal, Sri Lanka and Morocco with native clothes and new tattoos, says Smith.

The yoga pretzel "will do the most advanced yoga pose they can at breakfast just to show you that they can," says instructor Smith.

Supermodel Gisele Bundchen -- seen practicing a one-legged plank pose on 'The Tonight Show Starring Jimmy Fallon' -- has adopted yoga as part of her lifestyle.

Jennifer Aniston has made yoga part of her workout regiment. The 46-year-old has been practicing yoga for over 20 years.