Be Better Everyday

JKConditioning is a private fitness community located in the centre of St. John’s, Newfoundland. We offer personal training for busy people who want to improve their overall health and fitness. Personalized training sessions take place in a group setting under the guidance of our credible and reputable trainers. This means that you get the results of a personal training program with the support and camaraderie of our close-knit fitness community. We design workouts to make you better, not to see how much you can sweat.

Jon Erik Kawamoto and Thomas King standing in front of the JK Conditioning logo
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How We Work

Most fitness professionals promise “6 pack abs in 6 weeks,” or a similar message. We don’t do before and afters because there is no “after.” There is only continuous improvement. Also, our group training creates a community. When you join JKC, you are joining something bigger than yourself.

Custom Workouts in a Group Environment

Get the best of both worlds: a custom plan tailored to your needs and current ability along with the support from the JKC fitness community.

We Offer Flexible Scheduling

No locked-in days or times here. Train when’s convenient for you so you don’t have to miss workouts.

Pay As You Go

Enjoy a different fitness experience. Pay for training on your terms with no long-term membership fees. Out of town? No worries. Only pay when you workout.

Client Reviews

Read what clients have to say about their experience at JKC.

I recently visited Newfoundland for one month, and was looking for a good place to train while I was there. Jon and the team at JK conditioning really took the time to assess what I already knew, and set achievable goals for the time that I had with them. The gym was such a great place to push yourself. It had everything you needed, but more importantly it had a well organized, very knowledgeable, and really motivating group of trainers to push you at each workout. Not to mention a really nice group of other members who also motivated me to go that little bit further. I would highly recommend the gym to anyone who has a goal and wants to find a place to help them achieve it.

I have never previously seen the passion and level of care that Jon and Thomas bring to everyone who works out at JKC. Their knowledge, insight and skills are extraordinary, and they work with everyone individually to ensure the best possible results. The attention to detail and to every person’s specific requirements and goals, and the incredible, constant encouragement they provide, is, in my opinion, what truly distinguishes JKC from any other program in which I’ve participated. I am extremely pleased with the progress I’ve achieved thus far, and it’s largely attributable to Jon and Thomas and the approach they take to training and working with people.

Astrid Billfalk-Kelly

Personal Strength Training by Thomas King

I wanted to add strength training to my cardio, but have always felt gyms to be a bit intimidating, and was worried I would hurt myself without some supervision and help. JKC was highly recommended by several work colleagues. Thomas and Jon are both fantastic, making sure that everyone gets a highly personalized work out in a very supportive environment. The attention to detail and professionalism are second to none. The groups are very small, but very supportive and make the workouts even more fun. Since getting pregnant (36 weeks as I write this) I’m so happy that they continue to help me get stronger while always being safe.

I saw an article in Men’s Journal that quoted Jon in about 2018 while traveling and was impressed that someone in St. John’s made that international magazine.  Jon spoke about an exercise called the Farmer’s Walk and I started working that into my routine at the YMCA. I tore that article out of the magazine and kept it, meaning to make contact, but got busy. Then I had lunch with an old friend Bruce Dyke. I hadn’t seen Bruce for a while and I remarked that he looked super healthy and fit. He told me about his, and his son Cas’, experience at JKC and then I remembered the Men’s Journal article! No coincidences!

The experience is unique on many levels – great people, camaraderie, passion, purpose, and dedication. Jon and Thomas are attentive, precise and understanding.  Their teaching has unlocked a new perspective for me with what our bodies are capable of. I still appreciate the YMCA, wonderful place, but I can’t imagine working out without Jon and Thomas now.

Featured Coaching Programs

We are now accepting new clients for in-person training!

Personal Strength Training

Our goal is to transform your life through the avenue of health and fitness. New to strength training? Been lifting for years but in a rut? We got you covered.

Latest Activity on Social Media

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