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Meet Jonathan Cerf of Core Progression Elite Personal Training in Northglenn, Arvada, Boulder, Longmont, Lakewood, Rino

Today we’d like to introduce you to Jonathan Cerf.

Jonathan, please share your story with us. How did you get to where you are today?
Core Progression Elite Personal Training was founded in 2008. After working for 24hr fitness for about a year, I realized that there wasn’t a trainer centric wellness model in the marketplace, so I set out to create it. My first facility opened in 2010 and I actually lived above the studio. My building had first-floor storefront then condos above it. Within three months, the business took off and I was forced to expand and take over the building next to me as well. In a year and a half, we had to find larger space altogether and expanded to a 5,000 sq ft site. In 2012, I expanded again and opened my west Arvada location. I then spent the last few years fine-tuning the model to be able to take to the franchise market in 2018. We now have three corporate stores as well as 11 franchise locations all over the country.

We’re always bombarded by how great it is to pursue your passion, etc. – but we’ve spoken with enough people to know that it’s not always easy. Overall, would you say things have been easy for you?
I love the picture when it shows what people think the path of success looks like and then the picture of what it actually is. There have been times over the last 11 years that things have been smoother than others but lots of challenges, course corrections, and adjustments along the way. To highlight a few, I had a group of trainers plan a coup and leave to go start their own facility taking half of the clients at the time, I had an ex-manager embezzle a significant sum of money, I’ve had to fire trainers, managers and wellness providers, vendors, contractors to try and get to where we are at today.

We’d love to hear more about your company.
Core Progression is a trainer centric wellness company, meaning we primarily focus on personal training, small group training, group classes, and wellness services such as physical therapy, chiropractic, massage, acupuncture, and rolfing. We specialize in getting clients results, we are not a one size fit all approach to fitness but customize and tailor each workout and plan to meet our client’s needs. I’m proud of all of the clients we have been able to help over the last decade and the life transformations. We’ve helped clients get off medications, avoid surgery, look amazing for their wedding day, make varsity. What sets us apart is our commitment to science-based training and the community and culture at the facilities.

What were you like growing up?
I’m the oldest of six and have always been an entrepreneur, from selling seashells on the beach in Florida when I was two to have a landscaping company in high school. I’ve also always been a leader with having that many younger siblings to be in charge of. Athletics and sports was also a large part of my childhood, track, football, soccer, baseball, golf, and wrestling.

Contact Info:

  • Website:
  • Phone: multiple depends on location
  • Email:
  • Instagram: core_progression
  • Facebook: @coreprogression
  • Twitter: @coreprogression

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