About Mahon Strength & Fitness
Our Coaches
Ali Mahon-Pabon
About
Ali was a 3 sport athlete in high school and went on to continue her college volleyball career first at the University of Ohio Dominican and then the University of Rio Grande. Ali has always been a competitive athlete and continued to compete after college in CrossFit Competitions, various races and most recently completed her first Sprint Triathlon.
Having just had her third child, Ali understands what it takes to balance her own health and fitness in addition to raising 3 children, and working full time as a nurse! She is excited to continue on her fitness journey while assisting you in yours!
Credentials
- Coach
- CrossFit Level 1
Nathan Hummel
About
Nathan has always been an athlete. He was a multi-sport athlete in high school playing baseball, football and volleyball. After his playing days, he began his fitness journey by focusing on running. He completed a number of 5k’s and 10k’s as well as a half marathon. He has also completed several Spartan Races. He joined a gym with his wife and fellow MSF athlete, Amanda, doing HIIT classes prior to jumping right into our community when we opened in January of 2021. Nathan quickly developed a new love for lifting and has since competed in virtual CrossFit Competitions as well as the Donor Games Championship in 2021. Nathan believes fitness is an important part of a healthy lifestyle and brings his entire family along as his children Harper and Grayson also train in our kids classes. He is excited to help you realize what you are capable of!
Credentials
- Coach
- CrossFit Level 1
Rachel Baker
About
Rachel is a nurse and mom of two girls. She joined MSF in the spring of 2021 after having her second daughter. In her first year she had numerous accomplishments from running her first half marathon to competing in her first CrossFit competition.
Shortly after her first year at the gym she decided to complete her CrossFit Level 1 certification and join the coaching staff. She is excited to continue growing as an athlete while helping others realize their potential!
Credentials
- Coach
- Level 1 CrossFit
Ashley Obrest
HEAD COACH
About
As Head Coach at MSF, Ashley brings great experience in coaching, management, athletics, strength & conditioning and leadership development. With a background in collegiate coaching, she is passionate about helping athletes of all levels unlock their potential.
Additionally, Ashley takes pride in her own fitness as she has run the Chicago Marathon two times, and has trained in a variety of disciplines bringing a wealth of diverse fitness experience to our adult teamTRAIN Program.
With two children of her own, Ashley knows firsthand what it is like to balance a full schedule while still prioritizing her own fitness. She is passionate about our mission of Making Strong Families!
Credentials
- Coach
- CrossFit Level 1
Martie smith
About
Martie is a teacher where she has been in education for 26 years and a mom with grown children. She joined MSF as they opened their doors in January of 2021 and has never looked back. Martie was an athlete in high school where she played volleyball and basketball. Martie never stopped playing volleyball, she continued to play in many co-ed and quad leagues over the course of the next 10 years. Martie has always been active with her physical fitness, where she cycled for many years, completed cycling and hit classes for a few years, and even participated in dancing/zumba classes before joining the MSF community.
Martie works primarily with our Toddler Train and Athlete 101 and 102 programs. She is incredible with children in her approach and engagement with each child and works hard to provide an enjoyable environment that challenges them yet builds their confidence at the same time keeping them excited to come back for class week after week!
Credentials
- Coach
- NASM Youth Exercise specialization
CHELSEA LEHMAN
About
Chelsea is a high school English teacher and mother of two. She has been an athlete in some capacity for the majority of her life. She was a multi-sport athlete in high school and coached boys tennis and girls basketball at the school where she teaches until she had her first child.
Chelsea was thrilled to find MSF in 2021 after a couple years of feeling stagnant in her fitness journey. Since becoming a member, she has run several races and competed in multiple CrossFit competitions and just recently completed her CrossFit Level 1 certification to become a part of the coaching staff.
Chelsea is passionate about helping people and fostering the feeling of community within the gym. She hopes to encourage members to find the joy that fitness has brought to her own life while continuing to better herself along the way.
Credentials
- Coach
- CrossFit Level 1
Bernie Phelps
About
Bernie came to MSF with a passion for training and a determination to meet his own goals. What he has learned in his time training at MSF is that he finds great joy in being part of the community and supporting others in their journey as well!
Bernie is a life-long learner and educator and is excited to lead this community with his passion for fitness, uplifting energy and enthusiasm to help you all meet your goals!
Credentials
- NASM Personal Trainer
Shanna Smith
About
Shanna is a full time trainer and fitness professional. She has 10 years in the group fitness space originally starting as a group fitness instructor in California prior to moving back to the area where she is now a personal trainer at the Mason Community Center and an Orangetheory Coach at multiple locations.
She is well versed in heart rate training, TRX, Les Mills, and is also a member of the Cancer Training Institute.
Shanna enjoys sharing her love for fitness with others and we are thrilled to have her broad experience at MSF!
Credentials
- NASM Personal Trainer
- AFAA Certified Group Exercise Trainer
GREG BROWN
About
Greg joined MSF in the spring of 2022 at the age of 60 and quickly was an example to all that strength can continue to be achieved over our lifetime! He spent a career in the fire service and earned ACE Peer Fitness Personal Trainer certification through the IAFF/IAFC. After retirement he earned Poliquin PICP Level 1 certification and became immersed in functional strength, mobility and movement patterns. Since joining MSF he has earned Personal Fitness Trainer certification through the National Academy of Sports Medicine.
Credentials
- NASM Certified Personal Trainer
- AFAA Certified Group Exercise Trainer
JACOB SPANGENBERG
About
Jacob was drawn to the strong sense of community and the motivating group environment that MSF fosters. His entire family are also active members, and their positive experiences played a key role in his decision to join. Jacob brings a diverse athletic background to MSF, having competed in 11 different sports over the years. During high school, he participated in six sports, with football as his primary focus. He also achieved top-10 national rankings for two consecutive years in orienteering, a land navigation sport that demands both physical endurance and mental strategy.
Through these varied athletic experiences, Jacob has gained insight into a wide range of coaching and leadership styles. His time in leadership roles provided valuable opportunities to mentor and coach younger athletes, giving him a well-rounded understanding of both the athlete’s and coach’s perspectives.
Since joining MSF, Jacob has continued to grow as an athlete and has begun competing in CrossFit competitions. He is committed to continual improvement and strives to become the best version of himself—both physically and mentally—through the challenges and rewards of training.
Credentials
- NASM Sport Performance Enhancement Specialist