Skip to main content
  • Alexandria Calderon, Personal Trainer/Program Developer

    Years of Experience

    • 13 Years


    • NASM Certified Personal Trainer
    • ACE Certified Personal Trainer
    • Kickboxing Instruction
    • CPR/AED

    Alex competed in MISS COLORADO in year 2001. During her nights in the gym Alex came to realize she was not just looking better but started experiencing she had found her new outlet. At that time the gym began to bring her tranquility. This experience was a transformation for her. for the first time in a long time she began to find passion, love and acceptance. After a couple years in the gym, many people began to approach her with health question and were asking for fitness advice. It was almost as if she had found her calling. Just at 18 years old Alex began her fitness training journey. Alex has experience working with a wide variety of populations through many different fitness domains including weight loss, strength and conditioning, injury prevention, wellness coaching, endurance training, and general fitness. Her first clients was her twin brother Jonathon. Together they began to see a big difference in his weight. All together her brother Jonathon ended up losing 100 lbs.

    in my free time I like to
    In her free time you can find Alex engaged in kick boxing, Muay Thai or trying new exercise class. She likes to fine tune her craft so she in always learning new curriculum in regards to health, wellness and nutrition. Currently, she is pursuing a new certification in nutrition.

  • Sharon Sisneros, Personal Trainer

    Years of Experience

    • 5 Years


    • BS Regis University2018
    • MS Regis University 2021
    • ISSA-Personal Trainer
    • ISSA-Nutritionist
    • ISSA-Strength and Conditioning

    When Sharon first walked into Fitness Together-Edgewater, she was looking to make a lifestyle change. She was extremely overweight and living a sedate and unhealthy lifestyle. Sharon knew if she didn't begin to make a change towards a healthier lifestyle she was putting her life in jeopardy. Sharon was approaching a milestone birthday, considering retirement and a new career. She was aware that her weight would impact her ability to acquire new employment, which added to her motivation. With the help of the Fitness Together-Edgewater trainers, Sharon has lost 220+ lbs., ran her first 5K, 10K and twice completed a sprint-distance triathlon. Sharon's personal fitness journey and success is what inspired her to become a fitness trainer and join the Fitness Together team. Through her own experience she can help others do the same.

    in my free time I like to
    In Sharon's free time she loves to travel. If there is a an activity going on outdoors she is all about it. In the nice seasons you can find her gardening in her back yard. Year round though you may see her attending classic rock concerts. Her next fitness goal is to run a half marathon.

  • David Diaz, Owner/Operator

    Years of Experience

    • 18 Years


    • Bachelor or Science MSU
    • Master of Arts Education UP
    • ISSA Personal Training
    • BFS Group Training
    • Biggest Loser has lost 200 lbs
    • Ironman 2013 2015
    • Boston Marathon Qualifier 2010, 2012
    • Marathon PR 2:58:38 2015
    • All Region XI Baseball Team LCC 1992

    David wasn't too sure what he wanted to be when he was pursuing his undergrad. He did know back then that he did have a love for helping others. So with that he decided to become an inner city teacher/coach. He opted to teach and coach at MLK Jr Efficacy Academy and Denver North High School. He did enjoy his years at DPS. He learned/applied many techniques, made lasting bonds and met his wife. Yet, leaving the issues of the world at work proved to be challenging for him, so he opted to pursue a new dream. David began looking for a new career path. In late 2004, he went to visit a college friend that owned a personal training studio. Upon entering his buddy's studio, David had a feeling that he's rarely felt in his life. The calling was so strongly that David went home that night and told his pregnant wife, that he wanted to leave teaching and open a personal training studio in their neighborhood. She gave her blessing and since 2005 he and his staff have been training folks that live and work in The Sloan's Lake Neighborhood.

    in my free time I like to
    In his free time, you will find David hanging out with his family. He and he wife are professional carpoolers. The two cart their 3 daughters to and fro a variety of sporting events. When he's not cheering on his family. He is volunteering at local schools. He has coached baseball, basketball and softball at Lake Middle School. Early in his career he also coached baseball at Lincoln, MLK, North and Skinner. When he's not coaching you'll most likely find him training for some type of race.

  • Josh Thompson, Personal Trainer

    Years of Experience

    • 3 Years


    • BS Exercise Science Nebraska Wesleyan University 2020
    • ACSM Certification 2021
    • Husker Rehab/Speedway Village Internship 2019
    • NCAA III Collegiate Athlete

    Josh attended Nebraska Wesleyan University where he earned a bachelor’s degree in Exercise Science and was part of the Men’s Soccer team for 3 seasons. Being a life-long athlete, he was no stranger to, and much enjoyed, hard training sessions and his degree has allowed him to expand on his love for exercise. Much of his college soccer career was spent recovering from injury and during that time, the gym became the outlet that the soccer field had been for so many years. What was once just a place to improve as an athlete soon became a safe haven for him to enhance his physical and mental health, patience, and confidence. He implemented what he has learned into his own workouts and eventually many of his friends would ask him for training advice and workout programs as they saw the strides that he was making. He knew that he was on the right path; a path that brought him to Fitness Together where he can continue to use his passion for exercise to help others achieve their goals.

    in my free time I like to
    In his free time, he enjoys pushing past his physical limits in the gym, spending time with friends and family, golfing, snowboarding, and finding any excuse he can to spend time in the mountains.

  • Javarius Sanders, Personal Trainer

    Years of Experience

    • 7 Years


    • FTFC 2016
    • NASM 2022
    • CCD graduate 2022

    Javarius is an all-around athlete coming out of Sebring, FL. He spent his youth playing football, basketball, track, weightlifting, cheerleading, and competed in numerous 5k races placing 1st in his age group. After a few years in college, Javarius decided to pursue a career in personal training and became a certified personal trainer. Fitness Together Sebring is where he initially started training. He later went on to serve in the United States Marine Corps which helped mold him as a professional. This experience gave him the training and discipline to excel in all aspects of life. Post service, Javarius moved to Denver in January 2021 to continue his education. His biggest belief is that you are the master of your fate and the captain of your soul and that anything you want to accomplish in life can truly be attained; it all rises and falls on you. Give your very best, give your all, and never quit. Everything is possible!

    in my free time I like to
    In his free time you can find Javarius reading all kinds of books, going tubing on the lake, or even off-road 4-wheeling. He is also an avid traveler and loves to experience new places, cultures, music, and most of all food.

  • Future FT Team Member, Certified Personal Trainer

    Years of Experience

    • 2 Years


    • BS Exercise Science
    • NASM, ACE, ISSA Certified Trainer
    • CRR/AED certifies

    Your personality and personal training back ground complements your team members.

    in my free time I like to
    You have diverse interests that make you an interesting and awesome person to be around.


here’s how it works


signature fit evaluation

A complimentary signature process where we learn about your goals, health history, and take you through a mini workout so we have the information we need to begin building your customized program.

full body assessment

A comprehensive fitness assessment to collect baseline metrics that will help us track your progress.

personal training session

Meet your trainer in your private suite (or virtually) for your 1:1 session to begin your completely customized workout program.

progress checks

A comprehensive assessment every 6 weeks so we can celebrate your progress and set new goals.


  • I started working out after having breast cancer and heading to osteoporosis. My primary goal with FT was to increase bone density. I now have normal bone density.

  • I have been working out at FT for a couple of years and it has made a dramatic difference in my health. I no longer need hip surgery and I am able to dance and hike again.

  • Friendly people who care about helping you achieve your goals. FT helped me prepare to hike the Appalachian Trail at age 65. If you have the will, FT will show you the way.

  • The high quality training and nutrition advice at Fitness Together has helped me reach my fitness goals. I’ve lost 20 pounds and have a BMI of 22.8!