Welcome to PerformanceRx


We are exercise and movement specialists who believe you deserve a life filled with health, vitality and vigor. We focus purely on your goals, be it fitness, health, injury rehab or sports performance. We don’t do fads or gimmicks – we use scientifically proven techniques to ensure you get the very best from each and every workout you do and enjoy the lasting results. We specialise in 1-1 training, spinal and orthopedic rehabilitation.


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At PerformanceRx, we truly practice what we preach. Our passion for living a healthy and fit lifestyle overflows into each and every programme we design and every training session we do. We never have and never will create a one size fits all programme, so you can rest assured that your training and nutrition programme will be specifically tailored to your exact needs.


Personal training

Personal training

We specialise in 1-1 personal training. We believe that every individual is unique; we customise every detail in your training programme, right from the warm up through to the individual exercises. We strive to make your experience a seamless and gratifying journey. Find out more.

Low back rehabilitation

Low back rehabilitation

At PerformanceRx we take a very calculated and proven system in trying to get you back to enjoying a pain free life. With a hands on approach, you will be guided on identifying faulty movements, removing them and then working on a series of progressive exercises that have been specifically prescribed for you. Find out more.


What our clients say...

When I went to see Joel, I had lost all hope of getting my low back better. As a competitive Olympic weightlifter, I trained every day and I could no longer do this. After meeting with Joel he gave me a good perspective of what I could do later on. I was so impressed with the way that Joel works and how he explains things, I felt that everything had fallen into place. Working with Joel over the last few months has allowed me to feel normal again and the exercises are really working to make me so much stronger. I cannot wait what the future has in store for me.
— Shannen Dooley, Olympic weightlifter, Holland
Joel Proskewitz has been a total saviour and I don’t know what I would have done without finding a newspaper article about his work. After a thorough assessment, he designed and supervised a series of increasing rehabilitation exercises to alleviate my back problem. In the 15 months since I first saw him I have followed his instructions and have not suffered any further pain – which is incredible. I maintain the program and my back is now stronger than it has been for decades.

In my opinion, Joel’s knowledge and understanding of musculoskeletal systems and injury prevention whilst exercising is second to none.
I recommend all my friends to PerformanceRx, whether or not one needs a specialist consultation with Joel for rehabilitation or to see one of his his trainers, who are similarly instructed. My friends have since also found it incredibly helpful to check over on going exercise programs, so as to avoid later stress injuries.

PerformanceRx is a brilliant studio full of genuine expertise, in what seemed a veritable ‘jungle’ of potential treatments available. I am so glad I found Joel Proskewitz.
— Julia P, Sussex

Our flagship Swiss Cottage studio


Our facility is nothing short of world class and we are proud to offer you the highest quality of services in a luxurious yet functional environment. Our well equipped and laid out gym area marks the difference from others in the industry by offering natural light, high ceilings and a wide variety of high quality bespoke training equipment.



79 - 81 Fairfax Road
+44 (0)20 7625 3420

Opening Hours

Monday to Thursday: 6am – 9pm
Friday: 6am – 6pm
Saturday: 7am – 4pm
Sunday: by appointment only