Reaction Fitness Collective is located in the heart of Downtown Greenville at 9 Ferguson Street. Our facility is within walking distance from major attractions in Greenville including the Reedy River and Fluor Field. 

Our mission at Reaction Fitness Collective is to promote healthy and wholesome lifestyles through community-driven fitness.


Growth  We aim to inspire and empower growth, both within each other and the ever-changing world around us. Growth for us represents a mindset that we are open to and accepting of our opportunities- be that on the gym floor, in our homes, or in our communities. We acknowledge that growth can happen in many forms, whether that’s embracing the discomfort of a workout, or embracing the discomfort of change, always coming out a little stronger than before.

Balance  We value balance by acknowledging that what we do inside the gym helps us live better, more flourishing lives outside of the gym.

The physical exertion of exercise is just one piece of a much larger puzzle, and want you to feel empowered to supplement your lifestyle with healthy relationships, nutrition, self-care, and more.

Acceptance  Acceptance starts with the self, but we are here to help. We aim to foster a culture of respect and encouragement for individuals of all ages, backgrounds, identities, and abilities- using fitness and exercise as a way to break down barriers and build up relationships.


Amy Fryt
Tatiana Guarin

Owner and Head Coach

Amy is a CF-L2 Certified trainer as well as USAW L-1 Certified. She is a passionate believer that fitness can be used as an expression of character, and that it provides a medium for forging mental fortitude in all aspects of life. She thrives in the gym as a learning environment, using her extensive gymnastics background and collegiate track and field experience to help members build foundational body awareness, an understanding of movement patterns and ultimately working to promote efficiency in exercise and life. 

Amy’s goal as a coach and the owner of Reaction Fitness Collective is to help all members recognize their potential, overcome perceived limitations, and help them realize their greatest self. 

Sarah Kamp


Sarah quickly became addicted to the challenging and ever-changing daily workouts she experienced through functional fitness. After a few weeks with this new style of training, her running days were long gone and she was hooked.

Growing up heavily involved in team sports, she feeds off the energy of others and truly loves being in the group class setting. The accountability and caring nature of the community have been the reason she continues to come back. Her favorite part is that every workout is scalable to all fitness levels, and its core mission is to improve the health and wellness of people through functional movement. Her favorite kind of workouts are the long grinding conditioning work that uses a variety of movements to build that engine!


Tatiana is a CF-L1 Certified Trainer as well as USAW L-1 Certified. She is an avid weightlifter, pursuing the sport both as an athlete and coach since 2014. As a collegiate soccer player, she was exposed to the numerous ways in which strength in the Olympic lifts transfer over to speed and agility in sport and life. She is our resident weightlifting coach, and loves working with athletes of all abilities. Whether you are just starting to touch the barbell, or are fine tuning for competition, Tatiana has a unique coach’s eye that will help you reach your weightlifting goals. 

Crystal O'Neal 


Crystal began her fitness journey with the intent to lose a significant amount of weight and immediately fell in love with the community and for the first time – fitness itself. As a self-proclaimed former couch potato, she recognizes that fitness can seem intimidating and strives to make everyone feel comfortable, motivated, and excited to work out.

Crystal knows firsthand that hard work and consistency foster results and she will encourage you to push past your comfort zone and discover the amazing feats your body is capable of.

Carrie McClenaghan


After graduating from college, Carrie wanted to find something that could satisfy her competitive nature and drive for personal improvement.  A friend invited to her try Reaction Fitness Collective in June 2012 and she’s been a passionate member ever since!

Carrie’s goal as a coach is for each athlete to receive instruction and guidance that will enable them to grow and develop physically, psychologically and socially.  She wants to help facilitate positive change in each of the athletes, not just in the gym, but in their lives as a whole.

Haley Jameson


Haley, a Greenville native, grew up playing sports and excelled as a high school varsity athlete in soccer, basketball, and swimming. She started at Reaction Fitness Collective in 2016 and fell in love with the sport of fitness. She is passionate about the process, the constant challenge, the measurable results, and the community that our fitness methodology embodies. You can find her pushing clients to pursue their own version of greatness in the gym walls and beyond!

Charles Shields


Charles was a college athlete at Appalachian State University and has fifteen years experience with a focus on team sport athletes. This experience translates well to functional fitness athletes due to its application to sport and life.  He explored the CrossFit methodology on his own in the backyard for three years before understanding how important the community aspect is to overall growth as an athlete and a person.

Outside of the gym Charles enjoys outdoor activities such as hiking, surfing and camping with his wife Emily and two boys.

Andy Wilson
Kaitlan Wilday


Kaitlan holds several certifications in the training and fitness community; CF-L1, CF-L2, USAW L-1, CF Movement and Mobility, CF Gymnastics, ACSM-CPT. She utilizes this extensive background to provide members with a comprehensive experience as she helps them down their own personal journey in health and wellness.

Cody Gingerich
Tanya Stiegler


Tanya is a spirited coach with a love for fitness that extends beyond the gym. As one of the earliest members of the CrossFit Reaction family, Tanya has helped coached our gym community into true lovers of the sport. An avid outdoorswoman, her fitness lifestyle goes beyond the barbell and she is always eager for a functional fitness adventure!

Lindsey Lane