With over 52 years of training experience and a lot of us on our 2nd (or 3rd) careers, we have a unique set of skills to help our clients.

Here are some of our specialties:

  • Weight Loss

  • Joint Pain/Injuries

  • Neuromuscular Diseases

  • Strength Building

  • Pregnancy & Postpartum

  • Running Improvement

  • Fitness Nutrition

  • Teaching Alternative, Healthier Habits

  • Plus, so much more!

Stefanie Callens

Owner, Certified Personal Trainer

Voted top 10 Personal Trainers on Denver's A List 2018 & 2016 (under Trained By Stef)

What made you become a personal trainer - After years in the corporate world where it seemed that all my effort was for nothing, I wanted to be able to really make a difference in people's lives. What better way than to teach them tools to live a healthier, more active life?!

What's your favorite exercise - running or anything with a heavy rope, sled or slam ball

What's your least favorite exercise - yoga or the assult bike. I get bored easily and that machine is ridiculous!

What is your favorite part about being a personal trainer - that moment when a client realizes that can actually do something they hadn't been able to do before or in a long while. 

What is your favorite demographic to train and why. I have a couple. 1) Pregnant and postpartum women. As a new mom myself, I get there are so many changes physically and mentally to our bodies when we have a kid. I love helping moms safely stay active while pregnant and how to resume to their favorite activities once they are cleared from their doctors. 2) Women and men in their mid 40s-60s who either never made their health a priority or life has gotten in their way lately, and they are ready to focus on themselves and their health.

Why did you choose to own Vitality Training Studio? I love that it is a private studio. Clients don't have to worry about sharing equipment or feeling self-conscious like they would at a large gym. The studio provides a safe space for clients to feel comfortable achieving their health goals. The semi-private atmosphere also allows us trainers to help each other out, whether it's training each other's clients when we are on vacation or running ideas by each other for the best ways to help our clients. 

Austen Hawkinson

Certified Personal Trainer

What made you become a personal trainer - I became a personal trainer because I love to be around people and wanted to be able to help others to feel better about themselves. It is a true blessing to see the smile on their faces after they achieve a milestone, do an exercise they never thought they could, or seeing that smile as they progress.

What's your favorite exercise - the plank because in my opinion you need a strong core to have a strong body. I try to place a variety of the plank in my workouts to keep the core strong.

What's your least favorite exercise - All cardio is my least favorite, I know it’s good for us but it’s not pleasant. I will always be a weights person.

What is your favorite part about being a personal trainer - connecting and meeting people, I love to hear their story and what brings them to the gym. I like to make all my clients my friends and make sure they know I am someone they can count on.

What is your favorite demographic to train and why - I don’t have a favorite. I thought I would only want to train athletes when I got into personal training, but I realized that I like all demographics and the dynamics they offer. Working with everyone helps me grow and become a better trainer overall.

Cherise Miner

Certified Personal Trainer

What made you become a personal trainer- I had always been interested in fitness; I have been an athlete my whole life starting with soccer, gymnastics, dance, and softball.  I moved on to marathons, triathlons and Ironman distance races.  I decided I could make a career out of what I love to do, and in the process make a tangible difference in people's lives; giving people the tools to take charge of their health and fitness goals with confidence.

What's your favorite exercise - Running

What's your least favorite exercise - Cycling

What is your favorite part about being a personal trainer - being a personal trainer allows me the flexibility to continue doing other things that are important to me like raising my family, teaching group fitness and training for races.

What is your favorite demographic to train and why - I enjoy training all demographics.  There are similar and unique challenges to all ages and fitness levels that I enjoy working with.  I say again, it is wonderful to be a part of helping anyone, at any age, achieve their health and fitness goals.  I was a special needs teacher before moving on to personal training and this taught me every little achievement, no matter how tiny, is a wonderful thing to see in anyone.  I was lucky enough to work with the Colorado Special Olympics gymnastics team many years ago and it was fantastic to watch the athletes work so hard every day and be so grateful to be able to do these activities, it was amazing. 

Chelsey Smith

Certified Personal Trainer

What made you become a personal trainer - I became a personal trainer after I decided that I wanted to help people before they got sick. So I quit my pursuit for nursing school and made a 180 towards preventative medicine with exercise and nutrition! I couldn't have made an easier decision and I truly feel like I am doing exactly what I am supposed to be doing. 

What's your favorite exercise - anything with pulsing! A squat, a lunge, a push-up, you name it! And it is astronomically harder when you have to pulse it! 

What's your least favorite exercise - a renegade row! Ugh! My whole body screams at me when I do them

What is your favorite part about being a personal trainer -  when I can get my client's light bulb to turn on. That moment when they realize how their bodies are changing for the better and its all because they decided to commit to their health and get back into the gym with a pro! Its so much fun when they understand that their nutrition is just as (if not more) important than what we do in the gym together and then poof! The pounds just start to fall off and they couldn't feel more accomplished! Its simply the best!

What is your favorite demographic to train and why - I love training MOMS! Almost Moms (women who are trying), Moms-to-be (pregnant women), Veteran moms (women who have kids and are in the trenches of child raising), and moms who have kids that have left the nest (women who are free again to think about themselves and and can't wait to commit to their health again). Being their for them throughout their journey is exciting and so much fun. I also love training those in their later years who want to stay strong for grand kids and their favorite hobbies. I love helping people stay as independent as long as possible! 


Ross Villenueve

Certified Personal Trainer

What made you become a personal trainer - When I first got into fitness I loved how it made me feel, and I want to help people discover that feeling. I believe everyone can enjoy fitness if they find out what style works for them.

What's your favorite exercise - Pull ups. It's a great compound back exercise and you can do it anywhere that there is a bar!

What's your least favorite exercise - Any kind of Olympic lift simply because they are super technical I'm not good at them.

What is your favorite part about being a personal trainer - I love helping people discover what fitness activities that they like to do and start them on their journeys to a healthier lifestyle.

What is your favorite demographic to train and why - I like to work with absolute beginners because, as I said, I love to help people discover what there is to love about fitness. 

PK Thorstenn

Certified Personal Trainer

What made you become a personal trainer - My parents have been big on fitness for as long as I can remember. They would go on runs, lift weights, swim, kayak, and work with a personal trainer. I found myself doing a lot of the same things and fell in love with the fitness and wellness idea. I decided to expand my knowledge and get certified as a personal trainer, as well as work with several successful therapists and trainers. That’s where I was able to shape my craft and use it to change lives. The fact that I could organize exercises, sets, and reps in a way to get someone stronger or fix an injury was so fascinating. It wasn’t long before I decided to step completely into the strength training scene. 

What's your favorite exercise - Atlas stone load - it’s a true feat of strength to pick a giant stone from the floor and get it onto a high platform; also it just looks really cool! 

What's your least favorite exercise - Calf raises - I’ve been doing them for years and have not seen any progress! 

What is your favorite part about being a personal trainer - What gets me out of bed every morning, is the fact that I get to work with people that I enjoy; who are motivated enough to put their lives on hold for 30-60 minutes, in order to improve themselves. 

What is your favorite demographic to train and why - I would probably say those who are entrepreneurs and grandparents, have been the most interesting. It seems like they’ve "done it all”. And because I’m recently married and an entrepreneur, myself, I find that they can provide great information. I’ve also found that these individuals know how to WORK. They’ve succeeded in the business realm and raised a family. They’re fully committed to training. 

Do you hold or have had any experience with a special demographic of client? My background is in strength training. I’ve been competing in strongman for 4 years, and currently hold several state and national records. I definitely like to add some aspect of strength training in my client’s program. But I have also worked with individuals who have had shoulder, knee, and lower back injuries. So I guess you can say I’ve done plenty of rehab work and a whole lot of strength programming.

Morgan McCauley  

Certified Personal Trainer

What made you become a personal trainer -I wanted to become a personal trainer because fitness and nutrition have always been my passion. I am now able to teach and spread my knowledge about what I love for others to gain confidence and accomplish their health and fitness goals.

What's your favorite exercise - My favorite exercise is doing dead-lifts and squats. I love to lift heavy and build my glutes and hamstrings.

What's your least favorite exercise -My least favorite exercise is running. My shin splints and asthma get in the way too much. 

What is your favorite part about being a personal trainer - My favorite part about being a personal trainer is I love helping people discover all the amazing things their body can do, build self-confidence and help achieve their health and fitness goals.

What is your favorite demographic to train and why - I enjoy training all demographics. I am always learning from a variety of different clients and their dynamics. 


Dana, Client

I highly recommend! Trainers work with you to meet your own goals. You train with weights, ropes, balance balls, kettle balls, agility pieces, kickboxing bags. No workout is the same.  Lots of core work and stretches! You have nothing to lose!

Eugene, Client

Vitality Training Studio is a great place to get back in shape. Whether it's a surgery, pregnancy, wedding or time to get your life back Vitality will get you back in shape!

Steve, Client

Just what I needed! My trainer worked with me to adapt a fitness program to my body & my schedule. She's so encouraging & she listens to feedback to ensure client success. After completing a workout from the huge variety of intense & challenging options, my mood is improved long-term & I have more energy to keep going! Thanks Vitality!