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Trainers & Coaches

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Nick Murrieta - Owner, Personal Trainer, TribeFit Trainer


  • B.S. Kinesiology- Arizona State University

  • B.S. Biological Sciences- Arizona State University

  • CPT - National Academy of Sports Medicine (NASM)

  • USA Weightlifting - Certified Trainer

  • ONNIT Academy - Unconventional Trainer

  • Golf Fitness Specialist - NASM

A native of Arizona, Nicks interests in health + performance stem from his own experiences, playing sports and then going through and rehabilitating a back injury. Nick attended Arizona State University, receiving a B.S. in Kinesiology (Exercise Science) and a B.S. in Biology with an emphasis in history and neuroscience. While in school, Nick completed internships at Fischer Sports Physical Therapy & Conditioning as well as The Neuro Institute, where he worked with a broad range of clientele from Sports Performance to rehabilitation programs for TBI's and Spinal Cord injuries. This gave him both a lot of respect for the human body and also insight into the potential the human body has to come back and perform.  Upon graduating in 2013, he opened up After it Training, a training facility that advocates for community, quality movement, and everyday human performance.

Nick strives to train for performance in both body and mind. To be able to function daily and work at your greatest capacity is a huge asset and that's what training should be about, whether you're playing a sport or you have a 9-5

In his time outside of training, he likes to travel, read, hang out with friends & family. 

Rated and quoted by Thumbtack as one of the top fitness professionals to hire in 2015, 2016 & 2018.

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Aaron Schultz - Owner, Personal Trainer, TribeFit Trainer.


  • StrongFirst Kettlebell - SFG I

  • Certified Personal Trainer - ACE

  • Licensed Massage Therapist

Arizona native, Aaron Schultz, has been in the health and wellness industry since 2003. He first began as massage therapist. After noticing a need for more qualified caring trainers he then found his passion again for helping people transform their bodies, build confidence, and regain their athleticism through fun Intense training.

In 2016 Aaron partnered with long time friend Nick Murrieta at After It Training after realizing they have the same dream. With a strong sense of community and real passion to motivate people, Aaron brings a breath of fresh air to the fitness industry.

Always learning more, Aaron incorporates 15 years of experience working with the human body. When not personal Training, running group classes, or running a business Aaron enjoys spending time with his girlfriend and her two sons as well as enjoying delicious food and traveling the world.


Carrie Markham - Personal Trainer, Pitching Coach, TribeFit Trainer


  • BS Sports Management – Belmont Abbey College

  • MS Leadership and Organizational Change – Pfeiffer University

  • National Academy Sports Medicine (NASM) – Certified Personal Trainer

Carrie Markham is a 5th generation Phoenician who decided upon high school graduation to accept a two sport collegiate athletics scholarship in Charlotte, NC.  Upon graduation from Belmont Abbey College in 2009 with a BS in Sports Management, she continued her education at Pfeiffer University receiving a Masters in Leadership and Organizational Change.  After receiving her Masters, she stayed in the south another few years working an internship in the NBA and began her softball coaching career.  In 2012, Carrie decided to make her trek back across the country to her hometown of Phoenix where her love for softball led her to start her own softball pitching coach career which transformed to personal training.  After spending countless hours with female athletes who struggled to perform specific motions with their pitching form, Carrie became more interested in biomechanics and focusing on the differences in the male vs female bodies.  Her experience in working with softball pitchers has not only tested her patience but grown her knowledge in the way the body moves naturally and efficiently.  Increasing body strength and flexibility is the key to softball pitchers success, and I believe it is just as pertinent to the aver women’s body.   Efficiently structured workouts by Carrie will not only help you reach your fitness goals, but will help you manage your personal obligations while taking care of your own health needs.  


Scott Young - Personal Trainer, TribeFit Trainer, Unconventional Training


  • Onnit Academy Certified Trainer - Unconventional Training

  • Fitness Director - Pure Fitness (Tempe, AZ)

  • Apex Health Specialist (24 Hour Fitness)

Scott started in the fitness industry in 2010, where he worked as personal trainer and fitness director in Tempe, AZ. Scott has since decided to evolve his training methods by becoming a Certified Onnit Academy Trainer. In addition to common training tools such as the barbell and kettlebells, Scott is able to add more Unconventional Training Methods to his clients' workouts such as the Steel Mace and Steel Clubs, which demand total body control and total body strength. 

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Katie Rapkoch - PT Assistant, Personal Trainer, TribeFit Trainer, Registered Yoga Teacher


  • AS Physical Therapist Assistant - Bay State College

  • NASM CPT - National Academy of Sports Medicine

  • RYT200 - Aimfree Yoga Teacher Training

As a practicing Physical Therapist Assistant for over seven years, Katie decided to branch out into the fitness world in order to address some of the issues that she feels are all too common in the general population. In the past, many of Katie’s clients have demonstrated limited insight into the importance of health and wellness, both physically and emotionally. Katie hopes to bring awareness to the benefits of physical fitness on one’s emotional well-being.

Katie’s fitness journey began six years ago when she began training for a half marathon. While Katie reached her goal, and has since finished many road races, the repetition of distance running took a toll on her body. Katie has since found that a combination of weightlifting, yoga, and hiking are much more beneficial for her body. Katie believes that balance is the key to all things, and she strives to bring balance into her clients’ lives with a combination of functional movement training and yoga. As a Certified Personal Trainer, Register Yoga Teacher, and with her background in Physical Therapy, Katie is driven to educate and motivate her clients to see the power of mindfulness in movement.


Megan Tully - TribeFit Trainer, Personal Trainer


  • Bachelors of Fine Arts in Dance - Arizona State University

  • NASM CPT - National Academy of Sports Medicine

  • CPT & Bootcamp Instructor - American Sports + Fitness Associates

  • National Physique Bodybuilder Competitor

Megan was born and raised in the Oakland, California area. She came to Arizona ten years ago to attend Arizona State University to study dance. The ASU dance program had a very strong kinesiology based curriculum, which sparked Megan’s interest in the movement and functions of the body. After graduating from ASU Megan began personal training in the Tempe area and began competing in NPC bodybuilding shows where she competed for the next three years. The combination of Megan’s dance/kinesiology studies plus the training and dieting that she learned through the bodybuilding shows has made Megan passionate about health and fitness and having clients feel more confident inside and out, while gaining habits that promote a healthy lifestyle.

Outside of personal training/group fitness, Megan enjoys working and fostering dogs in need at the county shelters, stand up comedy and sports.