About Us

Jennifer Simmons 

Certified Personal Trainer, USA Level 1 strength coach certified, LPTA, Pound Instructor, Owner


First of all, I have the BEST job ever. I love being able to help someone believe in themselves and see that they are stronger in so many ways than they give themselves credit for. I love connecting with them and being there for them as they have the courage to pursue change. I love watching doubt turn into hope, fear turn into “attack”, and I love to see their self-confidence change as they realize that someone believes in them and won’t ever stop. Pretty soon, they start to believe too. Training for me IS personal, because that’s where the root of the problem is. It’s the best thing in the world to see someone achieve their goals and realize that they, yes THEY DID IT!

A little about me

Ever since I was a young child sitting in the back of my Mom’s aerobics class (yes leotards and scrunch sock era!) I knew I wanted to be in the world of health and fitness. Both my parents had health professions so “health talk” was very common around our house. It became even more common and important after my father had a heart attack and we as a family watched as he made some dramatic changes to nutrition and activity. At age 18, I certified as a group fitness instructor through ACE. I started to teach at the YMCA in Idaho Falls (my first classes were NOT pretty lol), then moved over to the Apple Athletic Club. My love for health and fitness only intensified as I grew older, but in a different way. I went to college and got my associate’s degree as a Physical Therapy Assistant and grew passionate about the importance of quality movement in our lives! I could see first-hand how health and fitness could affect you long term, and witnessing the quality of life through my profession as a PTA opened my eyes to how imperative it is to live a healthy lifestyle. And to just MOVE! In Pocatello, I have been lucky enough to teach at ISU, the Rec Center, and Gold’s Gym. I learned and grew as a professional at each of those places, and am thankful for the time spent there. In 2015 I realized that I needed to follow my passion and just bite the bullet to take the certification for Personal Training and got NASM certified. I decided to set out on my own and joined up with B.A. Athletic Training to teach Bootcamp. From there, I pursued my dream of opening my own gym and along the road have met the incredible individuals you see here.
 
I don’t know why I have been so blessed to have been surrounded by genuinely good people, but I am definitely not complaining! They are passionate about health and fitness and they want to help spread that passion! They each exemplify in their own way, the Jriven spirit! Please take a minute to read about each of them and see what makes Jriven different!!

MEET OUR COACHES

SHELLIE DAVIS

Certified Personal Trainer

Surge Fit


Hi, I'm Shellie! A native of Maine who transplanted here to Pocatello in 2004. Busy mom of 6, working full time for the State of Idaho, happily married to my husband Caleb for 28 years! My true fitness journey began with Jriven in 2016 and I LOVE group fitness! It has changed my life. The family atmosphere and real-time coaching at Jriven make all the difference. I started coaching in 2022 when I became certified as a Surge Fit instructor and found a real passion for empowering people to find their potential and maximize it. Being healthy is a life long journey and Jriven is a great place to start that journey, continue your journey, or take it to the next level!

KENDRA PONGAH

ISSA Kickboxing Instructor
ISSA Group Fitness Instructor
Certified Personal Trainer


Hi, my name is Kendra Pongah. I have been part of the Jriven family since 2015. I became a certified kickboxing, group fitness instructor and personal trainer in 2021. I enjoy teaching all formats of training from HIIT, strength training, glute focus training and tabata. I'll be honest, I don't come from a health and fitness background. Growing up on the Fort Hall Indian Reservation we had and still have a lot of unhealthy habits, health and fitness was never taught as being important. Many of our people suffer from diabetes, obesity, heart failure and other health issues. I am trying to break generational cycles of unhealthy habits by showing up for myself, my 2 kids and my little family. I have grown to love what I do inside the gym training and being trained. I love feeling stronger after every workout and I absolutely love this healthy and fitness lifestyle. I train for longevity, independent living, physical and mental growth.

SARAH HOFELDT

Certified Personal Trainer


NASM certification in group fitness, along with certifications in ViPR, kickboxing and aquacise.
I have been teaching in the fitness industry for over 20 years. Watching my clients grow in both strength and confidence is my greatest pleasure. I have taught many different styles of fitness classes over the years, I would have to say right now my personal favorites are strength training, Hiit and mobility. I strive to provide a workout environment that is fun, uniquely challenging, and rewarding for all who participate.

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Contact Information


208.317.8235

 jrivenfitness@gmail.com