B.Sc. Exercise Science, PKin, Certified HYROX Coach
Personal Trainer Nathaniel Ernst is a distinguished Professional Kinesiologist based out of Calgary, Alberta. With over a decade of experience, he has empowered a diverse clientele—including working professionals, actors and athletes—to achieve their health and fitness aspirations through his extensive understanding of human physiology and movement.
Nathaniel Ernst is also a certified HYROX coach and leads NATEFIT’s weekend HYROX classes in Calgary, helping first-timers and competitors prepare for race day.
Personal Trainer Nathaniel Ernst is passionate about educating his clients as they work toward their individual goals. He strives to ensure each person understands their body and the science behind the adaptations that drive their progress. Beyond training, Nathaniel values connection—he believes strong relationships are essential in guiding clients toward better health. His love for fitness shows through his own continual pursuit of athletic development in running, calisthenics, and strength training.
Most of Nathaniel’s hobbies revolve around movement and challenge, including trail running, HYROX, pickleball, weightlifting, and calisthenics. Some call it an addiction—he simply calls it passion.
Training Joe Keery
October 2022 – May 2023
From October 2022 to May 2023, I trained actor and musician Joe Keery — known for Stranger Things and his music as Djo — here at the NATEFIT studio in Calgary.
Joe's schedule was busy and unpredictable, so his program had to fit around it and still keep him strong, mobile and feeling good. We worked on the same things I work on with every client: moving well, building strength, and understanding the why behind each session.
Whether you're preparing for a role, a race or just want to feel better in your own body, you get the same coaching.
Educational Background and Certifications
Nathaniel Ernst earned a Bachelor of Science in Exercise Science from the University of Lethbridge. He holds multiple certifications, including:
- Professional Kinesiologist accredited by the Alberta Kinesiology Association (AKA)
- Precision Nutrition Certified Professional
- Functional Range Conditioning (FRC) Mobility Specialist
Sessions with Nathaniel Ernst are $120 plus GST. As a Professional Kinesiologist, his sessions may be covered by some extended health plans. Learn about working with a kinesiologist.
Community Engagement and Personal Interests
Beyond his professional endeavours, Nathaniel Ernst is committed to community service. He organized the NATEFIT Calgary Exposed 5K, a shirtless run in support of Inn from the Cold, a charity dedicated to assisting homeless families in Calgary. This event highlights his dedication to philanthropy and innovative approach to fitness challenges, raising over $200,000 to date.
Nate’s holistic approach to health and fitness, combined with his community involvement and personal achievements, underscores his commitment to enhancing the well-being of individuals and the broader community.
Nathaniel's Vision
My vision for NATEFIT is to create a place you genuinely look forward to coming to—a space where you can grow, challenge yourself, and push past the physical and mental limits you once thought were fixed. I want you to learn that you are not fragile, that your body is the vehicle that carries you through life—and you have the power to upgrade it. You can move well and pain-free as you age, and getting older doesn’t have to mean feeling stiff or restricted.
At NATEFIT, you’ll always have someone in your corner, rooting for you as you become the strongest, most capable version of yourself. I’ve seen clients set goals and achieve them, gaining confidence that spills into every area of their lives. My mission is to help people discover physical freedom—so they can enjoy activities outside the gym, pursue adventures, and experience movement as something fun and fulfilling. Because exercise shouldn’t exist only inside a gym; it should empower you to live life fully.
Testimonials
Great experience working with Natefit to get me back on track to my fitness goals. Very knowledgeable and friendly staff. The gym is very clean and has a great atmosphere. I worked directly with Cliff and would absolutely recommend him to anyone (male or female). He listens carefully and tailors your workouts to your goals, has a great personality, and truly wants you to succeed.
Initially I planned to go the personal trainer route for 2-3 months and then continue on my own. With Cliff as my trainer, my game plan changed rather quickly as I began to enjoy and appreciate the expertise and guidance week over week along with the visible gains. Now, 9 months later, I continue to go twice a week and have seen significant results in terms of strength gain, daily energy and overall physique as well.
I highly recommend Natefit to anyone looking to better themselves. Whether you're an athlete, Olympian or average Joe like myself - they will customize a program and work WITH you towards the goals YOU want to achieve. It truly made working out enjoyable for me, and it's been a while since I could honestly say that.
An original 3 month plan turned into an 8 month program and I’m the strongest I’ve ever been. Throughout the whole program, I worked with Cliff Krauss who knew exactly what I was after. Cliff pushed my limits within reason and quickly recognized the days where I didn’t have it and we did more low key workouts. I learned a lot about strength training and now have the fundamentals to continue to do some of this on my own.
I began training with Nate at NATEFIT in 2023. Nate’s deep knowledge of his field and commitment to his client’s health is very evident in every session. He takes the time to explain the 'why' behind each exercise and workout, which I find invaluable. I was primarily a 'cardio junkie' before and did not know much about or feel overly comfortable when it came to strength training, but he made me feel comfortable right from the start. Nate has taught me how to incorporate both strength and mobility into my workouts, targeted to my specific needs, which I know will be a gamechanger for me as I age. There has also been a noticeable change in my body composition and I have gotten so much stronger since working with him, so I am beyond thrilled with the results! Highly recommended
Natefit has been the best program I have signed up for. Having chronic back pain due to arthritis Natefit has set me up a program that is manageable for ME and better yet a program that I see unremarkable results in my daily movements. Natefit has me on a nutrition program which is easy, and I am seeing the results and benefits from it. Nate is knowledgeable, kind and committed in making MY progress a success. Highly recommend Natefit.
Great app, good system, diligent communicator, very knowledgable. Helped me achieve in 3 months what I thought would take years. Flexible solutions for all budgets. Highly recommend.
I signed up for six / seven weeks of intensive training with Natefit in order to help me pass an important fitness test that I had to do and Nate and Leo was instrumental in helping me achieve this. Nate is extremely knowledgeable and he and the rest of his team is very dedicated towards helping their clients achieve their personal fitness goals. My fitness level and physical strength would not be at the level it is today had it not been for Natefit. I highly recommend Nate and his team.
I started working with Nate in late November in regards to extreme lower back pain and leg numbness as a result of pushing my physical limits in the gym. Nate very carefully worked me through a series of movements to figure out what may be happening and his evaluation matched entirely with my doctors --bulged disc in the lower lumbar spine. Within one week, Nate had me out of pain and moving without the use of medication to get me through my day. His knowledge and experience in rehabilitating these issues has been beyond impressive and I'm so grateful to be continuing to work with him. As we move forward with personal training, I'm excited to see what I know will be true results in both mobility and muscle gain.
Nate is an exceptional trainer! He is incredibly knowledgeable and did an excellent job pushing me to achieve the results that I wanted. I am so happy with how I feel and look! I am 29 years old and was able to lean out in a way that I couldn't even achieve even while I was playing college sports. Nate is extremely professional and has a high energy and optimistic outlook that makes training feel like a breeze. I would highly recommend working with Nate!
Train with Nathaniel Ernst
One-on-one sessions with Nathaniel Ernst are $120 per session, plus GST, at any frequency. As a Professional Kinesiologist, his sessions may be covered by some extended health plans. Learn about working with a kinesiologist.
What clients say
“He takes the time to understand your goals, adjusts programming to your ability, and explains the “why” behind what you’re doing, which makes a huge difference.”
“Nathaniel is an extremely warm, friendly professional who cares deeply about each of his clients.”
“Nate is extremely knowledgeable about the science of health and fitness. He is motivational and lots of fun to train with!”
Rated 4.9 on Google. Read all our Google reviews
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Have any questions or comments? Feel free to call us today at 403-363-9897 or fill out the form below
Calgary personal trainers and mobility specialists focus on movement coaching, weight loss, and strength training.
Contact us
- Phone: 403-363-9897
- info@natefit.ca
- NATEFIT 4114 8 St SE Calgary, AB