Meet theCoaches and Staff

Passion, Training, and Education… our coaches bring years of experience and training to guide you to achieving your goals. We are here for YOU.

Dave Stansbery, Infinity Fitness AZ
Founder & Co-Owner
Dave was born and raised in the Pacific Northwest and has called Arizona home for 20+ years. AZ is the perfect place for his love for the outdoors (hiking, biking, golfing…). With a career and background in Finance, the health and fitness industry serves as a fun and refreshing outlet. He has completed multiple ToughMudders and Spartans and is always looking for a new challenge. The greatest thing about being in this industry is helping people transform their bodies and building an amazing community!
April Wallace with Infinity Fitness
General Manager & Co-Owner
April’s life has been deeply rooted in the pursuit of health and wellness, embracing a multitude of disciplines from strength training to boxing to obstacle course racing throughout her fitness career. From her early days as a dedicated coach, she has evolved into an instrumental figure within the Infinity Fitness AZ community. As General Manager and Co-Owner, April brings her passion for health and fitness to the forefront, to build the Infinity family. In addition to running the day-to-day operations, April loves helping clients achieve their body composition goals with personalized and group nutritional support, as a Certified Nutrition Coach. With a commitment to excellence and a relentless drive to empower others, April loves teaching, motivating, and inspiring our Infinity Fitness AZ family! NASM-CPT, Pn1.
Diyego Chavez Trainer at Infinity Fitness AZ
Head Trainer
Diyego grew up in Walnut, CA, where he played sports throughout his life and graduated as a three-sport athlete. After high school, he played college soccer until injury led him into coaching. He coached high school soccer for 3 years then moved on to private training and eventually became a personal trainer. He is certified with NASM as a Performance Enhancement Specialist. He earned his AS in Kinesiology from Mt. San Antonio Community College in Walnut, CA. He then earned his B.S. in Exercise Science – Sports Performance at Grand Canyon University.
Heather Collins, Infinity Fitness AZ
Heather grew up in Washington state and moved to Arizona in 2012 where she went to school to get her NSCA-CPT certification. She started working at Mountainside and Truhit simultaneously and fell in love with group fitness! When she’s not at the gym, she enjoys traveling, hiking, camping, paddle boarding, and all things outdoors! At Infinity Fitness AZ, the amazing workouts and incredible members she interacts with every day keep her coming back for more!
Christin Halvorsen, Infinity Fitness AZ
Christin has lived in Arizona most of her life. She has spent the last 10 years focusing on fitness and health and began teaching group fitness classes in 2022. She loves being in the gym or spending time outdoors hiking or paddle boarding. Along her fitness journey, she fell in love with OCR and has completed many Spartan, Tough Mudder, Rugged Maniac, and Terrain Races. She loves the opportunity to share her knowledge and experiences with others. She’s currently working on becoming a Certified Personal Trainer and Certified Nutritionist through NASM.
Chance Ikei Trainer at Infinity Fitness
Chance grew up in Honolulu, Hawaii, and moved to Chandler, Arizona in high school. He went on to further his academic and athletic career at Arizona State University, where he was a D1 wrestler and graduated with his Bachelor’s in Exercise and Wellness. He grew up as a multiple sport athlete and is now currently training as a Mixed Martial Arts(MMA) fighter. Aside from being a successful athlete, Chance’s biggest passion is coaching. Chance works with all ages and skill levels and does a variety of different types of personal training and group fitness.
Lisa Leier Trainer at Infinity Fitness AZ
Lisa was born and raised in Salt Lake City, Utah, although she has lived in Arizona for 30 years. Lisa has always incorporated dance into her life, including global travel and professional dance teams in Utah. Her corporate retail career transitioned to the fitness world after the birth of her second daughter. She has been AFAA /ACE Certified since 2002 as a Group Exercise Instructor. Lisa is also certified in Cycle (Spinning), Yoga/Stretch, Strength Training, Kickboxing, and Barre. She has been teaching in the Group Exercise environment for over 22 years at fitness clubs throughout Arizona. Lisa has participated in over 25 Half and Full Marathons, along with Tough Mudders and Spartan Races. Lisa qualified and ran the Boston Marathon in 2016, which was a highlight in her running career. As a long-distance runner, she knows how important cross-training with strength, alternative cardio, and stretch is for the body. Lisa loves to be a positive influence and motivator in our members’ lives!
Lynne Sharrers Trainer at Infinity Fitness AZ
Lynne’s unconventional path to coaching and fitness is why her perspective is so relevant: Fitness is a passion that became a job. Lynne spent 15 years in corporate America in a series of Accounting and Finance roles and used fitness as a getaway. Joining Infinity in 2014, she found her home and her passion. Lynne has her NASM-CPT certification as well as a Spartan SGX Coach, NASM MMA Conditioning Specialist, NASM Fitness Nutrition Specialist, and TRX Trainer. She takes great pride in being able to take her natural attention to detail to designing workouts, whether boxing or Spartan or adult lifting to help clients achieve what matters to them. Lynne has completed over 15 half-marathons, multiple Spartan OCR, and Tough Mudders while benefitting from all of the wonderful friendships she has made as part of the Fitfam at Infinity.
Infinity Fitness Coach Hayley Stout
Hayley was born and raised in Gilbert, AZ. She spent her entire childhood cheerleading, which piqued her interest in fitness. Once she graduated high school, she started competing in bodybuilding competitions, which then led her to become very passionate about all things health and fitness. She graduated with her AS in Exercise and Wellness at Mesa Community College and is currently working towards her BS in Kinesiology at ASU to become a physical therapist. Hayley enjoys teaching cycle, Tabata, HIIT, and strength training!

Try us out with a FREE Class

Scroll to Top
Crush Your Cravings Download

20 pages full of strategies to crush your cravings!

Get your free download now

Please enable JavaScript in your browser to complete this form.

Unsubscribe any time. We do not share or sell your information.