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Your Personalized Fitness Solution in Glendale
At The Fitness Institute Arrowhead, we are dedicated to transforming lives through personalized exercise and nutrition programs tailored to individual needs. With over two decades of experience, our team of certified professionals combines corrective exercise therapy, strength training, and nutritional guidance to address diverse health goals, from weight loss to senior wellness. Our semi-private environment ensures focused attention, accountability, and measurable progress, supported by a proven track record of client success stories.

We prioritize safety, practicality, and sustainability, designing programs that adapt to injuries, medical conditions, and lifestyle requirements. Our commitment to continuous education and evidence-based practices positions us as leaders in holistic health optimization.
Services
Weight Loss Strength Training Senior Health Youth Training Personalized Nutrition
Highlights and features
  • Certified trainers with decades of combined experience in corrective exercise and nutrition.
  • Personalized programs addressing injuries, medical conditions, and age-specific needs.
  • Proven success in weight loss, strength gains, and chronic condition management.
  • Semi-private environment ensuring focused, distraction-free training sessions.
  • Accountability through progress tracking and tailored nutritional guidance.
Associations and certifications
  • ISSA
  • NSCA
  • NASM
  • ACE
  • ITPA
What people say
Personalized programs Accountability Improved health Supportive trainers Proven results
Services
Weight Loss
Our weight loss programs combine low-glycemic nutrition plans with Peripheral Heart Action exercise to burn fat and build lean muscle. Clients receive free body fat analysis, progress tracking, and tailored adjustments. Success stories include 81+ lbs lost through sustainable methods.
Strength Training
Custom strength programs address muscular imbalances, injuries, and sport-specific needs using postural assessments. Clients gain lean mass, improve stability, and enhance athletic performance with trainer supervision and progressive overload techniques.
Senior Health
Gentle, progressive routines improve balance, bone density, and daily functionality for seniors. Programs reduce fall risks and enhance mobility, with documented cases of 80-year-olds hiking in Turkey after hip surgery recovery.
Youth Training
Sport-specific programs enhance athletic performance in hockey, volleyball, and football while promoting overall fitness. Trainers design fun, interactive sessions that improve strength, endurance, and confidence in adolescents.
Personalized Nutrition
Individualized nutrition guidance considers medical history, medications, and goals. Clients receive free assessments and meal plans that optimize metabolism, reduce inflammation, and support fitness outcomes without deprivation.
People
Greg Treviso
Owner / Trainer
With a Kinesiology degree and MBA in Healthcare Management, Greg has specialized in corrective exercise therapy for 20+ years. Certified by ISSA, NSCA, and ITPA, he develops programs that reduce chronic pain and improve mobility.
Carlos Sifuentes
Physical Therapist
A Doctorate of Physical Therapy and Kinesiology graduate, Carlos integrates rehabilitation with fitness training. His expertise in injury prevention bridges clinical care and performance enhancement for clients of all ages.
Don Hedges
Certified Trainer
ISSA-certified with specialization in exercise therapy, Don designs programs that address postural imbalances and chronic conditions. His clients report significant improvements in strength and pain reduction.
Nancy Monroe
Certified Personal Trainer
ACE-certified, Nancy focuses on women's health and strength training. She helps clients achieve body composition goals through tailored workouts and motivational support in a non-judgmental environment.
Arden Straw
Certified Personal Trainer
NASM-certified, Arden specializes in functional fitness and corrective exercise. He works with clients to improve movement patterns, reduce injury risks, and enhance overall physical performance through science-based methods.
Questions
What types of fitness programs do you offer?
We provide weight loss, strength training, senior health, youth sports, and personalized nutrition programs tailored to individual goals and medical needs.
How are programs customized for clients?
Each program starts with a free postural assessment, body fat analysis, and health history review to create science-backed, individualized plans.
Do you work with clients with chronic conditions?
Yes, we specialize in adapting programs for arthritis, diabetes, and post-surgery recovery, with documented success in reducing medication reliance and improving mobility.
What sets your trainers apart?
Our team holds advanced certifications in corrective exercise, sports therapy, and nutrition, with decades of combined experience in holistic health optimization.
Are sessions covered by insurance?
While we don't bill insurance directly, some clients use HSA/FSA accounts for services. Check with your provider for specific coverage details.