Welcome to Stretch Zone


Unlock your body’s flexibility with Stretch Zone.

Is back pain keeping you from doing what you love? 

Millions of Americans complain about back pain every single day, but why is it so prevalent? The most significant cause of back pain in adults comes from posture and how much time you spend sitting. Even if you stay active, the average person sits almost twice as much as twenty or thirty years ago. 

The human body was made to be in motion. Commuting to work, sitting at your desk, eating meals, enjoying leisure time on the couch — these actions add up. But how can you manage these aches and pains? By visiting us at Stretch Zone in SouthGlenn! Instead of manipulating your body in unnatural ways, our proprietary method relies on targeting your nervous system to make lasting gains in your mobility. 

You will see results immediately from your first session. The longer you keep up with the program, the more likely you will see a lasting impact that carries over to every aspect of your life. Don’t miss out on another walk with your children because you’re too sore from the day and don’t turn down that extra round of golf with everyone from the office. The first stretch is on us! 

Start living the way you want today! 

      – No Hassle 

      – Fast Results 

      – Efficient

Facts About SouthGlenn 

      – Centennial Airport is the third busiest non-commercial carrier airport in the country 

      – One of Colorado’s newest cities, Centennial was incorporated in February 2001 and has over 100,000 residents — making it Colorado’s ninth-largest city 

      – Currently, Centennial is ranked the 15th safest city in the country




    A Free 30 min stretch is waiting for you
    *Offer applicable to local residents of the selected location only By submitting, you authorize Stretch Zone to contact you via email, phone, and SMS regarding your request.

    Visit Us

    2504 East Arapahoe Rd, Centennial, CO 80122

    Located in the Cherry Knolls Shopping Center - we're right across the street from Streets of Southglenn at South. University and East Arapahoe Rd - our studio sits just east of the Shell gas station on the corner and next door to Shanghai Garden Chinese restaurant!

    Hours of Operation

    Studio hours:

    • Mon-Fri   8am-7pm
    • Saturday   8am-4pm
    • Sunday  8am-2pm
    stretch zone southglenn storefront
    Stretch Zone
    Stretch Zone
    Stretch Zone
    Southglenn Stretch Zone Reception Area
    Group of happy members of stretch zone
    stretch zone southglenn lobby
    Southglenn Trainer Helping Member Stretch
    Stretch Zone Southglenn Interior
    Woman stretching leg using stretch zone methods
    Southglenn Stretch Zone Storefront

    The Stretch Zone Method® addresses flexibility from a neurological perspective. This is achieved by dealing with the muscle’s nervous tension (“tonus”) to reach an optimal active range of motion. The goal is not to make a person more “flexible” or “elastic,” but rather enable you to move more functionally by re-establishing a more ideal resting muscle tone. By re-educating the associated nerve-muscle reflex, the Stretch Zone Method® leads to movement becoming easier and more efficient.

    Rather than creating soreness by pulling on our limbs to extremes, the Stretch Zone Method® works through the nervous system to achieve lasting gains in flexibility and range of motion. The method rests on the notion that changing and re-educating our muscle’s nervous energy is a major factor in unleashing our body’s intended function. This nervous energy, known as the stretch reflex, is our body’s automatic defense against the dangers of over-stretching. Any movement that goes too fast or too far, or is held for too long, will cause your body to resist with the stretch reflex. Once the reflex is activated, your body has effectively said “no more” and resists the stretch. Any further attempt at stretching becomes counter productive and may even cause long term damage.


    Jillian Diffendaffer

    General Manager (interim)

    Hi there - I’m Jillian and I am the interim GM here at SZ-Southglenn! I was born in Denver but raised in the Centennial/Metro Denver area. I have been a multi-sport athlete my whole life and played NCAA volleyball during college in RI. Living in CO provides an amazing environment for me to stay active and healthy. Working as the interim GM here at Stretch Zone provides me excellent balance to stay active while conquering my personal and professional goals. I genuinely believe in the SZ stretching protocols and I know first-hand the results of what regular stretching through Stretch Zone creates. The simple tool of stretching has been an invaluable assistant to me staying fit and I am delivering this same quality to all of our SZ-Southglenn clients. At home, my time is split between two kittens and my dog.


    Bobby Ziehfreund

    Director of Sales

    Hi-- I'm Bobby and I am originally from Manassas, VA. I graduated from Ferrum College with a Health Science degree and a business minor. I grew up wrestling and competed at the collegiate level under Nate Yetzer. May 11th, 2019, I graduated and hit the road for Denver, CO and have been here since. I am passionate about nutrition and optimizing performance through lifestyle practices and habits. I enjoy working with a variety of clients, of all different age groups, fitness levels, and personal goals. I occasionally stretch people in the process.