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Valiant fitness

Functional Fitness & Holistic Nutrition



Justin wittler



Certified Personal Trainer

Balanced Body Pilates Reformer


Justin graduated from The University of Nebraska-Omaha with a degree in Exercise Science.  Upon graduation, he began training at Prairie Life Fitness, where he was a Master Personal Trainer.  In 2016, Justin became Pilates Reformer certified and would later become Director of the Pilates Department. He keeps up to date on all certifications including his Certified Personal Training and Nutrition Certification through the International Sports Science Association as well as Pilates Reformer through Balanced Body.  After training at Prairie Life Fitness, Justin opened his own training business and Valiant Fitness was born.  Justin’s vision was, and still remains, helping people train their bodies through functional movement and various movement patterns to improve their life.

“I have always believed in working the body in a functional way, encompassing movement patterns in different planes.  Working the full body, while mimicking everyday life activities, ensures that we are truly training for the most important thing – life.”

In his free time, Justin enjoys spending time with his wife, Rachel, and daughter, Kinsley.  He enjoys attending sporting events, especially cheering on the Huskers.  Justin likes to stay active and busy outside the gym, and particularly enjoys boating on the lake, walking/hiking trails with his family, and hunting.



Beatrice High School

University of Nebraska-Omaha (B.S. Exercise Science)

International Sports Science Association Certified Personal Trainer

International Sports Science Association Certified Nutritionist

Balanced Body Pilates Reformer Certified


Professional Experience

2014-2020 Master Personal Trainer at Prairie Life Fitness

2016-2020 Pilates Reformer Instructor at Prairie Life Fitness

2019-2020 Pilates Department Director

2020- Owner/Manager Valiant Fitness



Certified Personal Trainer

Nutritional Therapy Practitioner

Restorative Wellness Solutions

21 Day Sugar Detox Coach


Olivia Borer grew up on a farm outside of Elgin, NE, and graduated from Pope John XXIII Central Catholic High School before moving to Lincoln to continue her education at the University of Nebraska-Lincoln. There, she was a Regent’s Scholar and graduated with high honors with her Bachelor’s degree. As her time at UNL reached an end, however, Olivia realized that her passion was in holistic health and nutrition, which she had discovered through her own self-study while working to heal her body after a long bout of health issues which stemmed from her years of dealing with anorexia, over-exercising, and adrenal issues.


Over the next few years after graduating from UNL, Olivia decided to continue her education in the holistic health industry through courses from the Institute of Integrative Nutrition where she became a Holistic Health Coach, the Nutritional Therapy Association where she earned her certification as a Nutritional Therapy Practitioner, and Restorative Wellness Solutions in which she is Level 1, 2, and 3 certified. She also is an active 21 Day Sugar Detox Coach, which is a program that focuses on using real, whole foods to help eliminate inflammation and sugar cravings.


Olivia has worked as the Group Fitness Assistant at UNL, at Prairie Life Fitness in Lincoln, NE, as a Personal Trainer and Holistic Health Coach where she was able to work one-on-one with clients for nutrition, exercise, and lifestyle changes, and at Synergy Chiropractic where she worked as a Nutritional Therapy Practitioner, Personal Trainer, and Clinical Rehabilitation Specialist.  She joined the Valiant Fitness team in October 2020, and also plans to pursue PA school starting in 2021.


In her spare time, Olivia enjoys cooking, reading all she can about holistic health, lifting weights, walking at Holmes Lake, listening to podcasts, and playing recreational sand volleyball and softball. She also spends her time working on her blog, podcast, and future YouTube channel, as well as her meal prepping business Personal Prep. 


Educations & Certifications: 

  • Pope John Central Catholic High School

  • University of Nebraska

  • Nutritional Therapy Practitioner (NTP) 

  • Holistic Health Coach 

  • 21 Day Sugar Detox Coach 

  • Certified ACE Personal Trainer 

  • Restorative Wellness Solutions Practitioner 

Professional Experience:

  • University of Nebraska Lincoln - Group Fitness Assistant Manager

  • Prairie Life Fitness - Master Personal Trainer 

  • Synergy Chiropractic - Personal Trainer, Nutritional Therapist, and Exercise Rehabilitation Specialist

  • Valiant Fitness - Personal Trainer, Nutritional Therapist


  • Blood sugar regulation 

  • Leaky gut 

  • Food allergies and sensitivities 

  • Poor digestion and other gut issues 

  • Adrenal dysfunction (HPA axis dysregulation) 

  • Hormone imbalances 

  • Stress management 




Certified Personal Trainer


NETA Cycling

Balanced Body Pilates Reformer


Kimberly Havranek grew up in Utica, NE, and attended college at Wayne State where she graduated in 2012. Kimberly currently resides in Lincoln with her husband Lincoln, son Maverick, and doggo Gunner.

Educational Experience:

  • Centennial Public School

  • Wayne St. College

  • Certified Personal Trainer - ACSM

  • TRX

  • NETA Cycling

  • Balanced Body Pilates Reformer


our services

At Valiant Fitness, we focus on functional movement with an eye for proper form and safety. Our certified personal trainers are here to assist you in reaching all of your fitness goals! We offer personal training, tandem training (2 people), small groups (3+ people), and youth training.









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“I started working with Justin because I felt I had hit a wall with the other exercise methods I was using (Jazzercise).  I had planned on using a 6-week session and now 3 years later I am still loving the results and enjoy the varied routines.  Justin has helped me with motivation, nutrition, and always stays positive with me even when I struggle.  I can understand why people are intimidated by personal trainers, but Justin makes it feel like I am working out with a friend, and I think anyone would attest to the results I have achieved.”


"I signed up with Justin thinking I would just take advantage of a free introductory training session at his previous gym, but two years later and I'm still training with him. He's more than just your typical trainer, he's professional, knowledgeable, and probably the most down to earth trainer around. When I'm training with Justin, it feels like I'm training with a friend, but he still keeps the sessions challenging and varied, so I never get bored or feel like my training has stagnated. I've noticed myself getting stronger and being able to handle tougher workouts. Justin is genuinely interested in seeing his clients progress, and regardless of someone's fitness level, I would recommend him and Valiant Fitness to anyone."


"I’ve been working with Olivia since 2017 and it has been truly enjoyable and has had a real improvement on my health. Since I started working with Olivia, I’ve lost weight,  improved my balance, and strengthened my core and other muscle groups. She varies my exercise routines which eliminates boredom and makes the sessions enjoyable. She is very knowledgeable about exercise physiology and has helped strengthen my troublesome shoulder. I’ve also learned a great deal about nutrition and as a result, I am eating much healthier and enjoying it. If you want to improve your overall health and feel better about yourself, I highly recommend working with Olivia."






5550 S 59th St #13

Lincoln, NE 68516

Tel: 402-510-9227


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