Our Team


Nancy Hallock - Owner

In 2007 I discovered kettlebell training after sustaining repetitive use injuries from long distance running, combined with zero strength training. Learning how to lift kettlebells safely and effectively, I was surprised at how quickly my strength and mobility increased, with no stress on my joints. In 2008 I earned my first kettlebell instructor certification and am currently a StrongFirst certified instructor. In 2010 I opened the doors to The Kettlebell Fitness Center.

As a woman in her 60's who wants to continue hiking, traveling and playing with my family and friends, strength training is not negotiable.

No matter your age or current physical condition, consistent training will dramatically improve your life - I guarantee it!


Leisha Harrison

I've been a gym rat most of my adult life, participating in the whatever the fitness craze of the moment was. In 2009 I stumbled across Nancy's gym, was introduced to kettlebells, and I've never looked back. Training with kettlebells was different than anything I had previously done - cardio and weight training all in one. I love any kind of athletic challenge, but especially long distance bike rides, and sometimes races. Almost immediately after beginning kettlebell training I was amazed at how much faster I could climb steep hills!

Over the past several years, I've earned three kettlebell instructor certifications, and am currently a Strongfirst II Instructor. Like many of us I have a demanding full-time job. Learning how to properly swing a kettlebell can provide immediate and lasting stress relief that's essential to overall health.


Patty Michaelson

I had never joined a gym before entering the Kettlebell Fitness Center in 2013. I worked with Nancy and discovered strength and joy from feeling strong through kettlebell training. Then in 2017, Nancy introduced me to the barbell and a new passion was discovered. I earned my StrongFirst Lifting Instructor certification in 2018 and enjoy coaching individuals in the Big 3 lifts (deadlift, bench press, and squat). Through consistency and proper form, I guide people to learn what they are capable of and how to reach their goals while building full body and functional strength.


Beverly Plowucha

Seeking treatment for my back following a training injury in 2013, my chiropractor referred me to The Kettlebell Fitness Center. I started with private sessions and then joined group classes, learning how to lift weight safely and effectively. One year later, I attended a workshop on sandbag training which ignited my passion for DVRT (Dynamic Variable Resistance Training). Following that passion has led me to earn both kettlebell and advanced sandbag instructor certifications.

It doesn’t matter where you start, just that you start! I’d love to be part of your fitness journey. Join me for a class and discover the fun of kettlebells and sandbags!


Greg Sides

First and foremost I am a proud member of the Kettlebell Fitness Center community! I am a DVRT Level 1 Certified Instructor, which means you can most often find me working with Ultimate Sandbags (USBs). I coach a variety of circuit and strength-based classes which include movements using USBs and kettlebells. I align with other coaches, having a strong focus on form and function, it is important that our workouts work for you. I believe that fitness is a journey, and one that is best traveled with friends. I look forward to seeing you in class!


Kerry Strnad

Prior to being introduced to kettlebells, I was training in regular gym lifting weights and “doing cardio”. I began consistently training at The Kettlebell Fitness Center in 2014 and fell in love with the results, but also with the community. I earned my RKC I Instructor certification in April 2018 and love coaching and supporting students in achieving their individual goals. Emphasis on safe and effective technique are the primary focus in our classes!

Competitive tennis is an important part of my life, and my game has improved significantly since beginning kettlebell training. As a social worker, my job can be stressful so I love working all that out in the gym. It is easy to lose sight of the importance of self-care when there are so many competing demands. Choose you.


Sarah Clark

I started training at TKFC in 2013 with no prior kettlebell experience. I remember being equally surprised that I could learn to do a get-up, and also get up at 5:30 a.m. to make it to class. In 2017 I earned my first kettlebell instructor certification (HKC) and later that same year trained with and passed my second (RKC) alongside my sister of swing, Beverly Plowucha. Now I get up 5 a.m. to teach the early morning class!

In addition to coaching and my position as Director of the Voorheesville Library, I play bass for the Kimono Dragons, Victory Soul Orchestra, Kitty Rodeo and a handful of other bands. When I’m not at the gym, the library, or on stage, you can catch me on the Helderberg-Hudson Rail Trail with my dog, Moses.