Black Dog Fitness is a Gym with a Mission.

We are dedicated to helping our members improve their quality of life with exercise.

  • Parkinson’s disease
  • Depression or Anxiety
  • Body Image
  • Confidence

Exercise is medicine for the body and mind.

Don’t wait to feel better.

Our Founder

Zach Guza, CPT, founded Black Dog Fitness to others improve their mental and physical health through exercise and community. Along the way, he learned about the benefits of exercise for people fighting Parkinson’s disease. 

Since then, Zach has been working to make Black Dog Fitness a center of fitness and support for anyone in Knoxville Tennessee.

East Tennessee’s Only Gym Dedicated to Fighting Parkinson’s Disease

Research has shown over and over again that exercise is a vital component of combating Parkinson’s disease. It is the only thing that treats the disease – everything else (drugs, surgery, shots, supplements) only mask the symptoms.  Regular exercise can slow, stop, or even reverse the progression Parkinson’s disease.

We are East Tennessee’s only gym dedicated to helping people with Parkinson’s with One-on-one training, group fitness or online training. 

Don’t wait for a crisis.  Even if you don’t think you “need to do all that yet”, the sooner you start exercising, the sooner you will start slowing the progression of Parkinson’s.  Exercise slows the progression of Parkinson’s no matter what stage of PD you are in.

Rock Steady Boxing was the first program in the country dedicated to the fight against Parkinson’s disease. Our exercises are non-contact (no one gets hit) adaptations of boxing drills. Boxers condition for optimal agility, speed, muscular endurance, accuracy, hand-eye coordination, footwork and overall strength. Parkinson’s fighters benefit from the exact same stuff and the intensity of a good fight.

Our membership structure is designed to fit your schedule and budget.  You can sign up for a specific number of classes per a month on unlimited. Each membership tier gives you access to all our programs: Rock Steady Boxing, PWR!, Spin, and more! 

Weekly Schedule of Black Dog Fitness group fitness classes

Want to work out at home?

Through our partner company The Parkinson’s Gym, you can have access to a wide variety of at-home exercise for those living with Parkinson’s.  And now it is Free on YouTube!


We also offer personal training for anyone looking to get stronger, learn to box or reach their unique goals. Personal training is the most effective way to reach your fitness goals, develop the best form, and have that extra accountability. There are two options for personal training with Black Dog Fitness—in the gym or online.