A step above the rest

About Us.

First timer? Buy one of our intro offers now. 

About Us

What is Fhitting Room?


Fhitting Room is a High Intensity Interval Training (HIIT) studio delivering a total body workout that’s a step above the rest. We’ve upgraded the group workout experience with better trainers and better programming to deliver better results. Smaller class sizes allow our caring and credentialed instructors to treat everyone like a VIP. Consider them your personal trainers.

About Us

The Science Behind HIIT.

Research proves that High Intensity Interval Training (HIIT) is the most effective method to increase endurance and build strength.

The Workouts

The Best of Both Worlds.

Our workouts will increase your endurance and make you stronger at the same time. Studies indicate as little as 27 minutes of HIIT three times per week produces the same anaerobic and aerobic improvement as 60 minutes of steady state cardio five times per week, so you can have more time for everything else in your life!

Our Story

About Us.

Fhitting Room started with an unshakeable desire to combine the results and safety of personal training sessions with the motivation, energy and fun of group fitness.

Kari took her love of planning unique consumer experiences and finding creative solutions to develop a new way for anyone to access the benefits of a personal training session in a motivational group setting. This “Gym Idea” became the subject line of an email Kari sent to a close friend in 2012 and led to the opening of the first Fhitting Room location in a small studio on Manhattan’s Upper East Side in March 2013. The lease for Fhitting Room’s flagship Flatiron location was signed six months later, followed by the Upper West side flagship in 2017. 

Fhitting Room now owns and operates three thriving boutique fitness studios in New York City and offers online workouts through Fhitting Room On Demand and interactive livestream classes through its newly launched virtual platform, Fhitting Room LIVE. Specializing in functional high intensity training and strength classes, Fhitting Room’s signature programming combines the energy of a killer group workout experience with the attention of a personal training session for a total body workout. With a seasoned team from the world’s most successful brands, Fhitting Room has become a leader in programming, talent development, community building, branding, tech-enabled marketing and digital boutique classes. Perfect for the new world order, Fhitting Room is mobilizing a connected, globally-influential community along with special interest micro-communities within our community.