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David Diaz
Founder & CEO/MA/BS/AA
David has a love for helping others. Initially, he was inner city teacher/coach at MLK and Denver North High School. He was lucky enough to work with amazing students and athletes while working for DPS. Many of his athletes received college degrees and some did it while playing sports.
After nearly a decade in education, David began looking for a new career path. He visited a personal training studio. had a vision, and followed his calling to pursue a new path in the fitness industry. He went home that night and discussed with his pregnant wife, Aomi. He would chase the dream of opening a personal training studio in the Sloan's Lake neighborhood. He's been personal training and following that dream for over 20 years.
Mac Shattuck
Personal Trainer/BS/NASM/Nutrition Minor
Mac has been an athlete all his life, participating in Judo, football, and wrestling. He grew up in Northern California, then moved to Northern Arizona for his education at NAU while residing there he interned at the Children’s Health Center, focusing on physical activity and healthy practices. Despite facing serious sports injuries and challenges in maintaining weight as a wrestler, he persevered and became passionate about living a healthy lifestyle. Balancing his studies, assistant coaching, and personal training, Mac has worked hard to achieve his goals.
Callissa Lucero
Personal Trainer/BS/NASM/Exercise Science minor
Callissa has been immersed in competitive sports the majority of her life, growing up playing competitive softball, where she developed a strong interest in wellness and workout planning through HIIt training, strength and conditioning, impact training, endurance building and CrossFit. She continued her athletic and academic career in Kansas, earning her bachelor's degree while playing collegiate softball and placing 4th nationally among other student athletes. During this time Callissa worked closely with the athletic department and head athletic trainer, training student-athletes across a variety of sports including football, wrestling, track and field, basketball, soccer, and volleyball.
She earned a Bachelors of Science degree in psychology with minors in both exercise science and art, furthering her holistic approach to health and wellness. With a strong passion for health and wellness, she dedicated herself to helping others reach their fitness goals, including helping her father through his current weightloss journey by providing guidance in both fitness, and nutrition.
When Sharon was looking to make a change. She sought guidance. She was extremely overweight and living a sedate and unhealthy lifestyle. Sharon knew if she didn't begin to make a change towards a healthier lifestyle she was putting her life in jeopardy. Sharon was approaching a milestone birthday, considering retirement and a new career.
With the help of the Solstice trainers, Sharon has lost 220+ lbs., ran and twice completed a sprint-distance triathlon. Sharon's personal fitness journey and success is what inspired her to become a Solstice fitness trainer. Through her own experience
she can help others do the same.
Personal Trainer/MA/BA/ISSA PT Nutrition
Sharon Sisneros
THE SOLSTICE TEAM
Who We Are & Our Vision
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ABOVE ALL ELSE WE ARE COMMITTED TO THE CARE, THE HEALTH & THE IMPROVEMENT OF HUMAN LIFE