How Jennifer Karr used Myzone to build and sustain an international coaching business
By placing effort, accountability and community at the heart of her coaching model, Jennifer Karr has built an international business where clients stay connected, motivated and engaged, wherever they are in the world.
The challenge
When clients move away from a facility, it can become almost impossible for a personal trainer or coach to maintain the meaningful connection that keeps them engaged, motivated to show up week after week, and continuing to pay their membership.
It’s not just the direct relationship with the trainer that can become difficult to sustain. Clients can also lose their connection with fellow members and the wider club community, interrupting accountability and breaking the training habits that drive long-term success.
For many personal trainers and coaches, their business is limited by the building that houses their membership base.
Jennifer refused to believe great coaching should be limited by geography.
The approach
Jennifer uses Myzone to create a connected coaching ecosystem where clients remain engaged regardless of where they train. Whether exercising at home, in a gym, outdoors or on the other side of the world, her clients can all play an active part in her coaching community.
Jennifer Karr ·JK FIT Wellness Coaching
Jennifer discovered Myzone more than 13 years ago and immediately recognised the power of effort-based tracking to motivate people of all fitness levels.
Unlike traditional activity trackers that reward performance or distance, Myzone rewards effort through Myzone Effort Points (MEPs), giving every client an equal opportunity to succeed.
That philosophy has become the foundation of Jennifer’s coaching model.
Today, every client is part of one Myzone community, regardless of location. Every workout contributes MEPs. Every effort is visible. Every challenge creates an opportunity for clients to celebrate both their own success and that of others.
Jennifer uses Myzone’s effort tracking, social feed and challenge functionality to generate meaningful interactions between clients every day, driving ongoing engagement.
As Jennifer explains:
Jennifer Karr ·JK FIT Wellness Coaching
Jennifer also leads from the front. A competitive triathlete and long-standing Myzone user, she wears her Myzone every day and is approaching an incredible two million lifetime MEPs. By consistently demonstrating the behaviours she encourages in her clients, she reinforces a culture where effort is valued, recognised and celebrated.
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The results
For Jennifer, Myzone has evolved from a standalone wearable into the operating system that powers her coaching business.
Rather than coaching 85 individual clients, she has built one connected international community.
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75% of active coaching clients use Myzone as part of their coaching journey.
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85 clients are connected through one shared coaching community.
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Members complete an average of five workouts per week.
By making effort visible, Myzone has created accountability that extends far beyond Jennifer herself.
Clients train across different countries, time zones and disciplines, yet remain connected through shared MEPs, workouts, challenges and encouragement within the Myzone app.
Jennifer’s community includes:
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Triathletes
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Cyclists
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Marathon runners
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Group exercise enthusiasts
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Older adults focused on healthy ageing
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Everyday exercisers looking to improve their long-term health
Because success is measured by effort rather than athletic ability, everyone can contribute equally. A beginner completing a brisk walk and an experienced endurance athlete can both earn meaningful MEPs and be part of the same community. This inclusive approach encourages participation rather than comparison.
Clients celebrate consistency, recognise one another’s achievements and provide encouragement through the social feed, helping reinforce positive exercise habits. As a result, many clients have remained with Jennifer for years, even after relocating hundreds or even thousands of miles away.
"Myzone allows me to coach people wherever life takes them." Jennifer
Jennifer Karr ·JK FIT Wellness Coaching
Retention and referral
Jennifer describes a sense of belonging as the number one driver of retention. Members become accountable to one another.
Jennifer uses Myzone Challenges to keep engagement high, encouraging members to compete on effort rather than performance through metrics such as:
- Weekly workouts completed
- Monthly MEP totals
- Time spent in target heart rate zones
- Team-based challenges
The result is a highly engaged community that consistently averages five workouts per week while generating regular referrals from existing members, who invite friends, family and colleagues to become part of the group.
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Why it works
Jennifer believes Myzone succeeds because it supports lasting behaviour change rather than short-term motivation.
Three principles sit at the heart of her coaching business.
Effort creates inclusion – MEPs reward effort rather than ability, ensuring every client can participate, contribute and succeed regardless of age or ability.
Visibility creates accountability – Workouts are automatically recorded and shared, giving Jennifer and her clients continuous visibility of progress while encouraging peer-to-peer support.
Community creates consistency – Challenges, social interaction and shared goals transform individual exercise into a collective experience, helping clients build habits that last.
What this means for coaches
Jennifer's experience demonstrates that Myzone is far more than just a wearable heart rate monitor.
Used strategically, it becomes a scalable coaching platform that helps trainers extend their influence beyond the physical gym or studio.
By combining effort-based tracking, social accountability and community challenges, coaches can:
- Retain clients when they relocate or travel
- Build thriving coaching communities without geographical boundaries
- Increase accountability between coaching sessions
- Encourage consistent exercise through MEPs and challenges
- Strengthen retention by fostering genuine connections between members
- Generate referrals through engaged, connected communities
Myzone has transformed the way Jennifer operates her business.
Jennifer Karr ·JK FIT Wellness Coaching