Four Fitness Startups Find a Unique Workout Niche Boutique health clubs are competing with established players like 24 Hour Fitness by creating unique ways to break a sweat. Here are four that are changing the way we work out.

Gym-goers sweat it out at a YAS Fitness Center.

Photo courtesy of YAS fitness centers

Boutique health clubs are competing with established players like 24 Hour Fitness by coming up with unique takes on breaking a sweat. Here are four that are changing the way we work out.

YAS Fitness Centers. YAS--founded in 2001 by Kimberly Fowler, author of yoga guide The No Om Zone--offers an exclusive combination of yoga and indoor cycling. The signature class involves 30 minutes of spinning followed by 30 minutes of "Yoga for Athletes." Other classes add free weights for a more intense yoga session or raise the cycling component to burn more calories than any other type of cardio workout, according to the company. There are currently four locations in California.