Introducing the RxFIT Team

Meet the fitness experts ready to help you achieve your fitness goals and your potential.

Our Founder

Founders of rxfit

Mark Mckellar & Tyler Welch

Mark and Tyler met back in the summer of 2012 at a church camp. Tyler from Ohio, Mark from Arizona, stayed in touch through the years and linked back up in Fall of 2015 during their freshman year at Brigham Young University. Both having a love of CrossFit, started Provo CrossFit in December of 2016, then opened up another location in Springville in 2018. They have since rebranded the name to RxFIT in January of 2019. Our vision is to help build a healthier human race and cure chronic illness through nutrition guidance and daily exercise.

Our Professional Coaches

TYRE AGUILAR

Head Coach
CF Level 1 Certified
CF Level 2 Certified

Coach Tyre has been with RxFIT since 2017 and a coach since 2018. She is married to Johnny (a truly beloved gym member in our community) and a mom to Luna the Lab.
[email protected]

Tyre is our Head Coach and has successfully ran numerous gym events such as the Sick2Well2Fit Health Challenge, Festivus Competition, Utah Spartan Race, Ragnar Race at Zions, and Hike to Timpanogos! Tyre coaches all the morning classes (4) in Provo, and is a particularly big favorite among the Provo members. Coach Tyre is a hard worker and a loyal friend to all at RxFIT. We love her!

MIRANDA MERRELL

Coach
CF Level 1 Certified
CF Level 2 Certified

Coach Miranda has been coaching for RxFIT since 2018 and has been in the community for 10 years. Coach Mig is the wife to Rob Merrell (a beloved gym member in our community) and a mom to 3 beautiful kids.
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She was pivotal in the success of opening up RxFIT Springville in 2018. A high caliber athlete herself – Mig holds numerous gym records for both metcons and olympic lifts. Mig has inspired and empowered all our members, especially her own community of women who follow to her 9:30 Springville class.

FERNANDA HERNANDEZ

Coach
CF Level 1 Certified
CF Level 2 Certified

Coach Fernanda has been with RxFIT since the beginning of 2019, and has been in the community for the last 10 years. There's never been another coach we've had that is more passionate and excited to coach, than Fernanda.
[email protected]

She is the wife to Chris (a beloved gym member in our community) and the mom to Cristianito. Fern is very nice and extremely fun to be around but when you’re in her class – you’re in her world! Because of her amazing coaching, numerous members have been able to get fit through her personal training sessions and nutrition consulting. She is also the Head of RxFIT Sport, a competitors program here at RxFIT. Take her class, you won’t regret it!

KYLE BRODERICK

Coach
CF Level 1 Certified
CF Level 2 Certified

Coach Kyle has been a member of RxFIT Since Fall of 2019 and a coach since Summer of 2020! Kyle is an undergraduate at BYU studying Information Systems, and a huge bright light in the gym!
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He coaches the evening classes in the Provo gym and is easily one of the most favorite coaches on staff! If you’re lucky you can workout with him in the 8:30 AM class in Provo, and he would probably beat you if the workout involved any kind of gymnastics or handstand push ups/walking movements. We love Kyle so much!

RILEE STONE

Coach
CF Level 1 Certified

Coach Rilee originally joined RxFIT in 2018, and recently joined back as a coach in 2021! She's a Mom of 2 kids and has always been a lover of CrossFit! She got her L1 in December of 2018 and has experience in being a part of many different gyms.
[email protected]

She coaches in the Springville Gym and is easily one of the strongest girls in the gym!

MORGAN WITHERS

Coach
Gym Intern
On Ramp Coach

Coach Morgan has been a member of RxFIT since 2018! She is a student at BYU studying Information Systems in the Marriott School of Business. Morgan is currently interning at the gym and holds the responsibility for Social Media, On- Ramp Sessions, and overall Marketing.
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She is the only girl in the gym is can run a mile under 6:30! She’s fun, encouraging, and the happiest person you’ll ever meet!

TYLER WELCH

Owner
[email protected]

MARK MCKELLAR

Owner
[email protected]

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