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The Workout.

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The Workout

Upgrade Your Results Now.

Torch Calories Torch Calories
Build Strength Build Strength
Increase Energy Increase Energy
Boost Endurance Boost Endurance
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Move Better Move Better

The Workouts

Experience The Difference.


Credentialed & Caring Trainers.

Whether you’re a beginner or expert, our trainers keep you safe, challenged, and smiling throughout class.

Everyone is a VIP.

Classes are big enough to be high energy, but small enough so trainers can teach proper form and modify for individual needs.

Smart & Complete Programming.

Classes combine HIIT, cardio, and strength training to deliver the most efficient workout with the best results in 50 minutes.

Every Day is Different.

While every class has a total body focus, our programming varies daily to prevent fitness plateaus. You’ll progress with each and every class and look forward to the next one.

What We Offer

Our Classes.

Our signature FHIX classes mean the smartest programming + best trainers period. It's simple.

Signature FHIX

Our Signature FHIX (Functional High Intensity Mix), perfect for all fitness levels, promises five elements to drive results. Each class combines functional movements, high-intensity intervals, strength training, varied exercises and a total-body focus sequenced to deliver a workout that’s a step above the rest. Expect: lots of variety when it comes to equipment, movements and programming. Look for bodyweight movements, cardio machines including rowers, ski ergs and assault bikes, a variety of equipment such as dumbbells, kettlebells, medicine balls, suspension trainers, boxes and battle ropes.

50 Minutes | All Levels


Everything you love about our Signature FHIX or FHIXtreme classes but in a smaller setting with a single trainer. Our FHITpit studio is located on the lower level of our Flatiron location and houses a maximum of 10 people per class.

50 Minutes | All Levels


This advanced class uses the same principles as our Signature FHIX and adds a dose of competition. Nothing is off limits in this heart-pounding, all-out challenge of a class, including prescribed weight loads, skilled strength movements and cardio blasts. Each class ends with scores and weights recorded on our studio whiteboard so clients can benchmark progress over time. Expect: machines, boxes, bells, stairs, running, friendly competition and more. Note: We recommend taking at least 10 Signature FHIX classes before signing up for FHIXtreme. Registration for this class may be subject to trainer approval. If you require modification, please sign up for our Signature FHIX instead. Registration for this class may be subject to trainer approval.

50 Minutes | Experienced


Through slow and controlled movements, this non-aerobic class will help you build strength and muscular endurance. Using equipment and your own bodyweight, the focus is on low reps and working with your personal maximum weight load for each exercise. Technique and quality are paramount over quantity and speed. Expect: movements such as the squat, deadlifts, pulling and pressing movements, static holds and bodyweight movements like pull-ups, chin-ups, push-ups, advanced planks and more.

50 Minutes | All Levels


Whether you’re kettlebell curious or already in love, Just KETTLEBELLS is for you. Master foundational movement patterns, refine your technique and learn new skills, including complex movements. Each class includes skill development, strength and conditioning complete with an exhaustive finisher. Take this for a dynamic full body workout while learning the art of kettlebells. Expect: variations of swings, thrusters, cleans, deadlifts, the snatch, kettlebell complexes and occasional use of machines to deliver cardio sprints. Note: If you require modification, please sign up for our Signature FHIX instead.

50 Minutes | All Levels

Low Impact FHIX

Go gentle on your joints while having fun torching calories and building strength in this low impact version of our Signature FHIX (functional high intensity mix) class. This class delivers machine-driven cardio blasts and strength training using suspension trainers, resistance bands, bodyweight skills and dumbbells and kettlebell exercises that are extra-easy on your body. Each class offers personal attention and ends with an extended stretch and / or foam roll led with love by our FHITpros. Expect: Cardio machines, suspension training, strength work and conditioning. No burpees (or squat thrusts), no hurdles, no agility ladders, no box jumps (no jumping of any kind, actually).

50 Minutes | All Levels


50-minute classes are highly engaging, community-driven, and fun group exercises that teach kids the importance of being active and fit. Regardless of fitness level, your kids will feel challenged and successful. Classes will utilize bodyweight exercises, agility drills, plyometrics, and more to help kids improve overall conditioning, cardiovascular endurance, and strength. FHITkids classes will be held Wednesday at 4:15pm at the Upper West Side from Wednesday, September 11th through Wednesday, December 18th.

50 Minutes | Ages 9 - 12

Have questions about which class is right for you?