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Jessica Thomas


Jessica Thomas is owner of Underground Fitness.  She has worked in various settings teaching group fitness for several years and also holds a Bachelors’ Degree in Elementary Education from Radford University.  She is former Chair and Co-council for Girls on the Run of Northeast Tennessee and loved being able to make a positive impact on the lives of young girls by empowering them to see the value in themselves and helping them move for their health.  Jessica is an encourager and loves to push you to your limits to see you flourish!  She is a certified Personal Trainer and Group Fitness Instructor.  She has created many original formats for Underground Fitness including Underground Bootcamp, Club Kettlebell, Sweat n Shred and a new favorite AMRAP.  She is certified in Indoor Cycling, TRX, Pilates, Piloxing Knockout, Kettlebell, R.I.P.P.E.D. and P90X.  Jessica's music is a hot commodity in classes at Underground...and people can't help but smile when her playlist beat drops!  Jessica is married to Bill Thomas and they have a son and daughter, Trent and Elynn.  She is ready to see you reach your goals.  Come check out one of her classes!

The Team


Hannah Wilcox


Hannah Wilcox has been a part of the fitness community for many years. She has certifications in Urbankick, Booty Barre, PILOXING as an Elite Instructor, Penalty Box, Indoor Cycling, and holds a Fitour Group Certification that allows her to teach  variety classes she created, Fitness Fanatics and HIIT Hop Barre.  She enjoys working in a group fitness setting to help people reach their health and fitness goals.  Hannah grew up taking dance for over 13 years and worked in a local fitness center training clients through high school and college. She is a 2004 graduate of ETSU with a B.S. Degree in Mass Communications with a concentration in Advertising and a minor in Marketing.  Hannah is a mom to three children who keep her lifestyle active with various sports. She also helps her husband, Shane, run their local locksmith business, Pop A Lock. Staying busy is what she knows and loves.


Megan Ellis


Megan Ellis became a group fitness instructor in March of 2014.  Her first love was Piloxing and her love for group fitness has only grown since then as she has attained 6 additional certifications as well as creating a few of her own formats. She has always had a special place in her heart for dance fitness as she was previously a dancer and dance instructor, but believes it is so important, for women especially, to focus on strength training! HIIT exercise is where Megan focuses most of her workouts and you better believe it has to be FUN! Megan's full-time job as a high school counselor allows her the flexibility to teach at Underground Fitness part-time.  She is also a high school cheerleading coach.  Megan is the mom to a beautiful baby girl, Hayes, fur baby, Callie, and wife to Jarrod.  Look for her on the schedule teaching one many formats at Underground including:  MOVE, Pound, Muscle Step, Muscle Step Tabata and Underground RIDE.


Jennifer Bullington


Jennifer Bullington had a love of all things fitness early in her childhood, from doing obstacle courses or drills with her Marine Corps father to participating in Jane Fonda workouts with her mother.  Growing up in Hawaii, she was very active in a variety of outdoor sports and water activities.  After high school, she relocated to Tallahassee to attend Florida State University.  There she graduated with a degree in Education and began her career in Rehabilitation Services (drug and alcohol addiction).  She relocated to Atlanta for work.  Then began attending Bootcamp classes and fell in love with it! It was then that her desire to teach fitness was realized, but she did not feel she had the courage to go for it!  Fast forward several years and a relocation to Johnson City, plus some encouragement from Underground owners, Jessica and Amanda, she went for it!  Jennifer is certified in Group Fitness, Strength and Conditioning classes, INSANITY and L1FT and SH1FT.  Jennifer enjoys encouraging clients around the studio, even when she is not instructor!  Over the years, she has completed several half marathons, a full marathon (Marine Corps), Marine Corps 17.75, Obstacle courses races and several Spartan.


Meredith Berry


Meredith Berry is a Johnson City native, married to Ben and has four children.  She has a passion for dance, as she danced in multiple genres growing up.  Following a hip injury related to marathon training, she began physical therapy to promote the healing process.  Her Physical Therapist suggested taking yoga regularly.  Four years ago she began her journey to embracing the benefits to yoga practice.  After falling in love with the art and discipline of yoga and the benefits found from easing her pain, she decided to pursue certification to instruct yoga.  In addition to her yoga certification, Meredith also is a certified group fitness instructor and Pilates instructor.   She is thankful to God for allowing her the ability to teach and for the opportunity that this yoga platform has given her.  While Meredith has seen benefits in her own personal health, she has also been thrilled to see her yoga students experience improved health related to regular yoga practice.  Meredith invites you to meet her on your mat!


Whitney Eanes


Outside of teaching group fitness, Whitney Eanes has a Bachelors’ degree and experience as a Respiratory Therapist.  In 2013, she married her husband Heath. She is currently a stay at home mom to two little girls, Ashlynn and Gabrielle.  Whitney’s love for group fitness started in college when she took an ‘Intro to Turbo’ class. She was hooked.  She loved Turbo and made arrangements to be at class every week. After primarily participating in just Turbo, she began adding other fitness formats to her exercise routine.  Once an opportunity to sub for an instructor came along, Whitney realized how much she loved teaching!  Teaching had never crossed her mind and it was definitely out of her comfort zone, but saying yes to that opportunity, she says, was one of the best decisions she ever made!  And she had so much fun teaching she decided to get certified.   Whitney is certified am to teach TurboKick, R.I.P.P.E.D., Tabata, Body Shred and Kettlebell.   She cannot wait to workout with you at Underground!


Becky Dunkelberger


The joy of teaching and helping others has been Becky's life passion.  A former middle school math teacher and Girls on the Run coach, Becky shifted gears, and combined her love of teaching with her own personal passion: fitness.  As a former dancer, Becky fell in love with barre after her first class.  She loves mind, body, balance, core, and breath connection and how each class leaves you feeling stronger!  Becky loves to teach a pilates class that incorporates modern cardio aerobics with lengthening and sculpting movements to deliver amazing results.  As a long time runner, Becky turned to the low impact, but cardio ad low body intense Underground Ride to help with injuries caused by running.  Now, Ride is her all time favorite! You will find her teaching and taking Ride as often as possible!  Becky is a certified Barre, Pilates, and Indoor Cycling Instructor.  She loves meeting new people and helping others become healthier and stronger.  When not at the studio, Becky is skiing, hiking, kayaking, paddle boarding, and hanging out with her husband, Brian, 2 daughters, Isabelle and Ella, and golden retriever, Ruby Pearl.


Hailey Eaton


Hailey Eaton received her RTY 200 hour certification in 2016 and she has been teaching since.  She loves yoga, not only for its awesome physical benefits, but also for the impact it makes on her everyday life. She has found that a consistent practice helps to bring clarity and peace to her overall wellbeing.  She loves leading others through their practice in hope that they will find the similar benefits.  In addition to teaching yoga, Hailey is an elementary school art teacher.  She loves spending time outside hiking, gardening, and playing with her dog.

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