
Where Data Meets Direction
Most fitness advice is built on estimates. Calorie targets based on averages. Training zones based on formulas. Nutrition plans built on assumptions. Our Performance Lab replaces all of that with measurements specific to your body.
Whether you are an athlete who wants precision data to drive every training decision, or someone who simply wants to understand what their body actually needs to thrive, The Lab gives you a clear, clinical picture of your physiology. No guesswork. No generic benchmarks. Just your numbers, explained in plain language, with a path forward.
All testing is performed by Ben Kessel using the Korr Medical Technologies system, the same equipment used in research and clinical settings. Available as standalone tests or combined for a complete physiological picture.
What We Test

VO2 Max Testing
Know your engine. A clinical measurement of your aerobic capacity, powered by Korr Medical Technologies. For athletes, it means precise heart rate training zones and a data-backed map of your cardiovascular potential. For anyone focused on long-term health, it means understanding exactly how your heart and lungs are performing, and how to train smarter for years to come.
RMR Testing
Know what your body needs. Your metabolism is not a mystery. It is measurable. A Resting Metabolic Rate test gives you a clinical read on exactly how many calories your body burns at rest, so your nutrition plan is built on your data, not an algorithm's guess. Whether you are an athlete optimizing your fueling strategy or someone who wants real answers about why their diet is not working, this is where it starts.
Running Analysis
Run better. Hurt less. Video-based biomechanical analysis of your running gait. We identify inefficiencies and injury risks in how you move, then give you concrete, actionable feedback you can take directly into your training. Whether you are chasing a race goal or want to run without hurting yourself, understanding how you move is the first step to moving better.
Your Lab Specialist
All Performance Lab sessions are led exclusively by Ben Kessel, CSCS, USAT Level II Coach, and USATF Coach, with over 20 years of clinical and coaching experience, and one of the only Korr Medical testing systems in Brooklyn, bringing hospital-grade metabolic testing to Park Slope.


