Trainer Bios

Keven Burdorf, BS
Exercise Science, ACE Certified Personal Trainer, PN1 Nutrition
CPR/First-Aid Certified

Matt Kay, BS Kinesiology and Physical Education
ACE Certified Personal Trainer
CPR/First-Aid Certified

Matt Kay is a Maine native.  He graduated from the University of Maine in 2017 with a Bachelor’s degree in Kinesiology and Physical Education Teaching/Coaching.  Since then, gaining his Certificate as a Personal Trainer through the American Council on Exercise (ACE) as well as teaching/coaching experience from previous jobs, ski instructing, and as a ropes course adventure guide(Navitat Knoxville). In high school, he was a multi-sport athlete in soccer, baseball, and skiing (in which his team won states in 2011).  He contributes his love for sports and exercise to his father/mother who kept him actively trying new sports at a young age.  When he’s not in the gym, Matt loves to be outdoors enjoying hobbies such as hiking, biking, paddle boarding and camping.

Spencer Green, BS Exercise Science
CPR/First-Aid Certified

Born and raised in Knoxville, Spencer attended Grace Christian Academy where he played football and wrestled. Growing up in a family of avid Vols fans, Spencer developed a love for sports and fitness. He continued his education at Carson-Newman University where he graduated in 2018 with a bachelor’s degree in Exercise Science. In addition to his schooling Spencer participated in two internships. The first with the Carson-Newman Athletic Training staff, and a longer stint at Kramer Physical Therapy Clinic.  Spencer enjoys outdoor activities such as hiking, fishing, and hunting in his spare time.

Katie Hatfield
NASM Certified Personal Trainer
CPR/First-Aid Certified

Originally from Georgia, Katie is a NASM certified personal trainer and nutrition coach, and currently working to obtain her weight loss specialization.

Katie has grown up with a love for women’s soccer, ever since she was old enough to kick a soccer ball herself, progressing that into a passion for all things fitness later in life.

Growing up, Katie’s Dad had a lot of health problems from his obesity which is why she chose to immerse herself in fitness education. Now armed with the knowledge of how to help someone fight obesity, her goal is to help others take charge of their own health. This led to her first position in the industry, working with Bariatric patients.

Katie is constantly working on her own fitness, pushing herself to run her next Spartan race. When she’s not in the gym Katie enjoys reading, movies, and hiking with her dog. 

Lars Carlson, AS Exercise Science
ACE Certified Personal Trainer
USA Weightlifting Lv. 1 & 2
CPR/First-Aid Certified

Lars is a Knoxville native.  He grew up running cross country and played competitive tennis through high school and was also captain of the tennis team at Christ School in Arden, NC.

Lars attended a Fitness Specialist program at Trident Tech in Charleston, SC. where he received a certificate of applied exercise science, as well as his ACE certification in 2013. He later went on to internship in a CrossFit gym and started personal training in 2013. Through CrossFit he fell in love with Olympic weightlifting leading to him getting his USA weightlifting level 1 and 2 certifications. 

He has worked with all age groups, and fitness levels, at one point even coaching adaptive fitness for clients with unique needs. He strongly believes all clients benefit from different forms of exercise and should find ones that cater to their individual goals and needs.  For him the greatest joy in his career comes from the connection that is built while helping someone achieve their goals both mentally and physically.

When he’s not in the gym training he has competed in CrossFit competitions , 5Ks, relays, and half marathons throughout the passed 10 years.  He loves strength training of all kinds and hopes to continue to compete in some form of fitness for the rest of his life.

Stetson Clement
ISSA Certified Personal Trainer
CPR/First-Aid Certified

Stetson is a New Hampshire native. At a young age he fell in love with exercise and fitness which inspired him to start wrestling later in high school.  After graduating high School in 2018 he decided to pursue a career in the fitness industry and obtained his ISSA training certification in 2021. He always enjoys exploring new methods/ styles of fitness training to further help his clientele become more confident in their physical abilities.  Outside of work Stetson’s hobbies are biking, hiking, and cooking. 

Sierra Myers, 
ISSA Certified Personal Trainer
NASM Flexibility & Stretching, ISSA Nutrition
CPR/First-Aid Certified

Sierra was born and raised in Knoxville, Tennessee and graduated from Halls High School in 2014 where she was team captain for the Female Track and Cross Country Teams. She then went on to the Collegiate Level for Tennessee Wesleyan University for Cross-Country and Indoor & Outdoor Track before transferring to University of Tennessee at Chattanooga.

As a Young Woman, Sierra fell victim to low self-esteem and negative body image.  She decided to change her approach and take athletics more seriously which is when she realized the potential she had as a runner. Feeling more confident and more energetic than ever before, Sierra wanted to help others suffering.

With a love for running and fitness, she went on to pursue her Personal Trainer Certification through ISSA, as well as from the National Council for Certified Personal Trainers (NCCPT) to help others reach their goals and overcome emotional and physical obstacles. She has a NCCPT and NASM ‘Flexibility & Stretching’ Specialization, an ISSA Nutrition Certification, and is actively working on pursuing her YOGA Certification to connect the Mind & Body in her Personal Trainer Practice. She has Pelvic Floor Therapy & Strengthing Experience after her own Pelvic Floor Recovery from her labor in August 2021. 

Dustin Price
ISSA Certified Personal Trainer
PN1 Nutrition, TPI Certified
CPR/First-Aid Certified

Dustin is from a small county outside of the Knoxville area.  He’s been a personal trainer for 4 years now, but his interest for the profession started when he was working at UPS training new hires.  He loves training because of the ability to make someone better as a complete person not just for the aesthetics.  While becoming a personal trainer he has earned certifications in nutrition as well as Titleist Performance Institute (TPI-Golf). 

Andrew Siegelin
ISSA Certified Personal Trainer
CPR/First-Aid Certified

Andrew grew up in Upland, Indiana and attended Taylor University before moving to Knoxville with his wife. When he was 3, Andrew was diagnosed with type 1 diabetes, teaching him to be very intentional in how he took care of his health. He has always been driven to overcome any limitations diabetes presents. Working through this instilled the desire to help others take care of their own bodies. He played many sports growing up, then focused on playing soccer through high school and college. After his final college soccer season, Andrew began participating in Taylor’s crossfit program and running on his own. He also worked as a Personal Trainer as a student for 2 years in college which continued to develop his passion to help others pursue their fitness goals and push for peak performance. In his free time, Andrew enjoys spending time with his wife, friends, working out, playing soccer, and being outside. 

Lindsey Wong Pili
ACE Certified Personal Trainer
CPR/First-Aid Certified

Lindsey grew up in a small town in Alaska. She’s always had a passion for all things active and was heavily involved in sports her entire life. Coming from a polynesian background, with food being a big part of the culture, Lindsey saw family and friends suffer with several health issues and decided to explore exercise and nutrition as a way to help make a difference. She graduated with a bachelors degree in exercise and wellness from Brigham Young University where she also interned as a nutritionist for the athletic department. Lindsey loves helping people reach their goals and find more confidence in their own skin. When she’s not in the gym you can find her outside, hanging with family, or cooking something yummy in the kitchen.

Rachel Nix
ISSA Certified Personal Trainer
CPR/First-Aid Certified

Growing up a theatre kid who loves art, photography, and music, Rachel and athletics never mixed. But, after moving back to Knoxville in 2018 she found herself at a local Crossfit gym looking for community.  What she found there sparked a fire for fitness that she never thought existed.  Since then she has taken a deep dive into the health and fitness industry by obtaining her ISSA Personal Training Certification.  Her belief is that you’re never too old for fitness and she loves helping others reach their goals. When she’s not at PTI you’ll probably find her training for some type of athletic competition, having fun adventures with her husband, or just relaxing with a good cup of coffee in her hand.

Colin Green
BS, Exercise Science
ISSA Certified Personal Trainer
CPR/First-Aid Certified

Colin is a Knoxville native who attended Grace Christian Academy. His introduction to fitness came when he started wrestling and playing football in middle school throughout high school. He began his fitness education at Carson Newman University where he attended for 2 years and finished his education at Lee University, earning his bachelor’s degree in Exercise Science. His first experience personal training started during his two internships with the athletic training staff at both Carson Newman and Lee where he worked with athletes from various sports. Outside of work, he enjoys fishing, playing basketball, and watching the Vols.

Mike Brown
BS, Exercise Healthcare
ISSA Certified Personal Trainer
CPR/First-Aid Certified

Mike is a Canisius University graduate with a degree in Sports and Exercise Healthcare, along with a minor in Strength and Conditioning. He moved from Buffalo, NY to Knoxville in November of 2023. As a former track athlete, he brings a passion for fitness and finds purpose in serving others to reach their goals. He has gained experience through personal training and group fitness from his background at Orange Theory and Crunch Fitness.

Sierra Walker
ACE Certified Personal Trainer
CPR/First-Aid Certified

Sierra was born and raised in Maryville, TN.  Her Passion for fitness came after high school when she first started going to the gym and realized she loved watching her health and body progress.  She is a strong believer in lifestyle changes, consistency, and loves watching people around her succeed.  Outside of work she enjoys going to church, hiking, snowboarding and practicing Jiu-Jitsu.  Whether in her free time or at work, she is always looking for ways to grow and make a positive impact on those around her.

Nick Plemons
BS, Education & Kinesiology
NSCA Certified Personal Trainer
CPR/First-Aid Certified

Nick is from Lenoir City, TN.  He is a University of Tennessee graduate and has a Bachelor of Science degree in Education with a major in Kinesiology. He played many sports growing up but played baseball and basketball competitively. He continued his baseball career through his freshman year of college at King University. After graduating, he worked at a golf course in the Knoxville area and coached high school baseball. Coaching led him to getting his NSCA Certified Strength and Conditioning Specialist certification. His struggle with injury throughout his athletic career drove him into the field of fitness where he enjoys helping people learn about the field as well as helping them to improve themselves. When he is not in the gym, you can find him playing golf, tennis, basketball, or enjoying time with friends and family.

Ben Doyle
NASM Certified Personal Trainer
ISSA Strength Coach & TPI Certified
CPR/First-Aid Certified

Ben grew up in San Diego California and made his way out to Knoxville in June of 2024. Originally born in Washington, both of his parents were in the United States Navy for a combined 50 years and spent most of their time stationed in San Diego. Growing up Ben was a very active kid, playing all types of sports, from racing motocross & mountain biking, to baseball, football, basketball, and golf. That led him to pursue a career in fitness back in 2020 where he got his training certificate through NASM. He continued his education, by working as a fitness specialist for the United States Navy at Naval Air Station North Island in Coronado CA. There he worked with active-duty sailors, retired veterans, and their family members. There he also got certified as a strength and conditioning coach through ISSA and also his love for golf, brought him to get certified through the Titleist Performance Institute. Outside of work he loves to golf and do anything outdoors.

Coral Malpass
BS, Kinesiology
ISSA Certified Personal Trainer
CPR/First-Aid Certified

Coral was born and raised in South Central Pennsylvania before moving to Knoxville to attend the University of Tennessee, where she earned a bachelor’s degree in Kinesiology. During her undergraduate years, Coral interned with UT sports medicine, gaining hands-on experience with the football, tennis, and soccer teams. After graduation, Coral initially pursued a career in medical sales but quickly realized her passion lay in a more active setting. Eager to return to her roots in sports medicine and fitness, she is excited about her path of being a CPT. Coral is driven by a deep commitment to helping people stay healthy and fit, enabling them to live life without limitations. She is passionate about promoting a healthy lifestyle and constantly seeks ways to inspire and support others on their fitness journeys. Outside of work, Coral enjoys spending time outdoors, whether hiking, skiing, golfing, or simply enjoying life with her dog.