Our Team

DK Kearsey

Our English Muffin David Kenneth (DK) is a big, excitable bear of a man. With a background in Professional Rugby, he feels very much at home when coaching CrossFit. Having a community that challenges you and wants you to succeed beyond your own limits is the part that makes this work. Coaching allows me to take my focus off myself and focus on what is really important. When I am coaching, it is all about the athletes. Getting to connect with people on their level every day is what makes our job so special. I am incredibly grateful for the people that allow me to do what I love. 

CrossFit Certifications include:

CrossFit Level 4 Trainer (CCFC)

Anatomy Certificate

Gymnastics Certificate

Lesson Planning Certificate

Running Certificate

Scaling Certificate

Weightlifting Certificate

Coach’s Development Certificate

Competitors Certificate

Programming Certificate

CrossFit Kids Certificate

CrossFit Nutrition

Aerobic Capacity Certificate

Other notable certifications:

Precision Nutrition, Level One

Reformer Pilates 

The Ready State 101

Coaches Prep 101

Jenn Chambers

Since as long as I can remember I’ve had a love for all things sports, fitness and competition. I grew up playing any sport I could, with many years of competitive hockey and soccer. After a few too many bumps to the head, I had to take a step back from the competitive sport world and focus on my nursing career. While playing various recreational sports as an adult and going to commercial gyms, I had never really felt satisfied in my sport and fitness endeavors… until I joined CrossFit Muskoka. I fell in love with the sport of CrossFit instantly and haven’t looked back. Just over 2 years in and I am so l honored to be able to coach this incredible sport to an even better community. Between coaching and nursing I’m so excited to be able to work with people on all ends of the health and wellness spectrum and share my passion for CrossFit.

CrossFit Certifications include:

CrossFit Level 2 Trainer (CF-L2)

Lesson Planning Certificate

Other notable certifications:

HCP-BLS

Mental Health First Aid Certificate

Bachelor of Science in Nursing

Kathryn Kearsey

I am not a natural athlete, but I found CrossFit in my late twenties and it completely transformed my life. CrossFit is a way for me to celebrate what I am capable of both physically and mentally. As a coach, I am so grateful I get to help others realize their own extraordinary abilities and achieve things they did not think were possible.

CrossFit Certifications include:

CrossFit Level 3 Trainer (CCFT)

Adaptive and Inclusive Trainer (AIT)

Anatomy Certificate

Gymnastics Certificate

Lesson Planning Certificate

Running Certificate

Scaling Certificate

Weightlifting Certificate

Coach’s Development Certificate

Programming Certificate

CrossFit Kids Certificate

CrossFit Nutrition

Other notable certifications:

Precision Nutrition, Level One

RYT500 Yoga Instructor

Stott Pilates Advanced Mat Work

Lisa Overholt

I have been working part-time in the Fitness Industry since 2009. I started as a way to keep myself motivated, jumping into new challenges whenever they appeared.   What I didn’t expect when shifting from participant to instructor was how rewarding  it can be to help others with their fitness journey and watch them find an activity they love.  My fitness motto is ‘try everything and you will find an activity you love’.  That is how I found CrossFit and love that is so varied that I never get bored.
I live with my husband and dogs here in Muskoka and have been a permanent resident working here full time since 2001.  We are rescue dog advocates and regular volunteers with the Dollars For Dinners program with The West Muskoka Food Bank.

CrossFit Certifications include:

CrossFit Level Two Trainer (CF-L2)

Spot the Flaw Certificate

Scaling Certificate

Lesson Planning Certificate

Other notable certifications:

 CanFit Pro Certified Personal Trainer

CanFit Healthy Eating & Weight Loss Certificate

CanFit Children’s Coach Certificate 

Schwinn Certified Spin Instructor

Aquacycle 

Scott Asselstine

Growing up I was heavily involved in playing team sports (mostly rugby, hockey and football). Being an athlete, training was always a top priority for me to perform at my best and something I have always been incredibly passionate about. When I finished my competitive sporting career I found I was lost and the identity I had, faded. That is when I found CrossFit, and coaching. 

CrossFit's foundational principles have allowed me to my focus on bettering my own health while helping others achieve their goals at the same time. The team like culture that CrossFit classes have, help athletes and coaches come together to be better together.

CrossFit Certifications include:

CrossFit Level Two Trainer (CF-L2)

Spot the Flaw Certificate

Other notable certifications:

Bsc. Kinesiology 

M.A Sport and Recreation Studies

NCCP Level 1

Amanda McLennan

I joined CrossFit in 2020 and have never looked back since. CrossFit for me is more than just a place to go to do fitness rather it is a place with community as its core foundation. CrossFit has allowed me to push boundaries and goals, unlike any other program with the mantra of always pushing myself to do hard things and I know you can too!   

CrossFit Certifications include:

CrossFit Level One Trainer (OL1)

Other notable certifications:

Advanced PADI Driver Certification

WSWO Wakeboard Cable Instructor

Greg Rasmussen

I joined CrossFit Muskoka two years ago, after having spent a few years dabbling in functional fitness many years as a high-level swimmer both in my youth, and as a masters athlete. Ifound an amazing community and a learning environment I had never experienced in my years of coaching, and as an athlete.

After 18 years of coaching multiple sports, I was sure my time in the coaching world was done and it was time to just enjoy working out. To my surprise, the moment I started coaching again I realized how much fun it was to help, motivate and teach people once more!

I love the CrossFit community and the variety of types and intensities of workouts!

CrossFit Certifications include:

CrossFit Level One Trainer (CF-L1)

Other notable certifications:

NCCP Level 2 Swim Coach

NCCP Level 1 Basketball Coach

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Head of Member Relations