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 started training at JKC in 2016 because I’ve always had upper back issues that became aggravated through work. I sought out other training and physio, but experienced little to no results. A client of mine happened to be coming to JKC for a similar issue and highly recommended it. I have had great success and haven’t looked back! I always feel like I’m getting programs tailored to my needs and I’m never bored. I’m 30 weeks pregnant now with my second child and have been able to workout through both pregnancies here at JKC. Even on my least mobile days, I felt safe to workout because my programs were specifically modified for my needs.

Darlene Parrott-Manning

Personal Strength Training by Jon-Erik Kawamoto

Have to thank both Jon and Thomas for their help with my conditioning this past year. After a major injury in 2020, I tried everything. My foot doctor (Dr. D. Sutton) said there was something missing and recommended Conditioning. I then found JKConditioning and it definitely worked for me. Today September 8, 2024 I completed a Half Marathon in 1 hour and 42 minutes and came First in my age group.
Thank you JKConditioning!!!

Kathryn Sparrow

Nutritional Coaching by Julia Howard

From my initial consult with Julia, she was professional and knowledgeable as both a Registered Holistic Nutritionist and athlete. She was interested in my nutrition and fitness goals and the development of a plan that would set me up for success.

Julia designed weekly meal plans that were complete with recipes and shopping lists. The food choices were nutritious, easy to prepare, and ensured that I felt well nourished and energized throughout my training and non-training days. Not only do I feel leaner and more fit, but I have more energy and I feel much more in tune with my body and food choices. Julia really helped me put everything in place so I can continue this process going forward- I cannot thank her enough!

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 had virtually no real experience using weights and felt intimidated going gyms. I avoided gym-goers using free weights, especially when hearing that loud crash, as they would drop weights to the floor. I thought this was to show everyone around them that they owned that area and that I shouldn’t go anywhere near! So I guess I just wanted to learn how to lift weights safely in a gym environment.

I spent over 18 years in the British Military, so I got to use some nice gyms. 99% of my time and experiences in those gyms was spent doing cardiovascular workouts, because I could just jump on a treadmill, plug in my head phones and do my own thing! JKC is different, because they have given me the confidence to use free weights and equipment that I had feared for years. Their demonstrations and knowledge is impeccable and I thank them for their continuous belief and support they show me at every session.

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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