At FAST, we understand that no client is the same or has the exact same goals in mind. With private and semi-private training sessions available, our Certified Strength and Conditioning Specialists can assess and help create a plan that’s sure to deliver results. Our Tempe facility offers an indoor space for weights and strength training, while an open outdoor turf area is perfect for working on speed and sports-performance drills.
PES, CPT, USAW, Crossfit L1
Education: San Jose City College, Malone University
Jonathan is an avid fitness enthusiast and former D2 athlete from Anchorage, Alaska. He enjoys hiking, biking, fishing, and rock climbing, and he has participated competitively in football, wrestling, and Olympic weightlifting.
Education: Arizona State University
Originally from Connecticut, Victoria came to Arizona to pursue a degree in Exercise and Wellness and has a background in soccer and track and field. She has a performance-based approach to her training and is looking to grow in her career as a trainer and future Physical Therapist Assistant.
For full class descriptions, please visit our group fitness classes page. All classes at this location are 45 minutes unless noted otherwise.
Personal training and Sports Performance training available by appointment.
"I started attending FAST sessions at Foothills in 2014, as a way to share my daughter’s figure skate training and get back in shape. At the time, I had knee and back pain and couldn’t run a single mile. Working out with Jonathan Castillo and the other FAST trainers has yielded huge improvements in my strength and endurance. The increase in my core strength and stabilizing muscles have eliminated my back spasms and allow me to run five miles without knee pain. In February, I will be competing in my second Spartan Race. Thanks Foothills!"
"Jonathan and the FAST program are the reason I was known as the fastest receiver in the AZFL (Semi-Pro). It’s hard for me to trust people with training me because of the knowledge I’ve obtained over the past 3 years. I can always trust Jonathan, as he always has athletes best interests at heart. He motivates and pushes you each day and each rep."
"I was 48 years old, overweight and out of shape when I started working out with Jonathan at FAST... Even though I was anxious and unsure, he created an exercise routine that was/is challenging enough to help me get healthy, but not so tough that I was/am unable to do the exercises... In the nine months since I have been working with Jonathan, I have lost weight, become stronger, and grown healthier overall.”
"I was known as the fastest receiver in the AZFL (Semi-Pro). It is hard for me to trust people with training me because of the knowledge I have obtained over the past 3 years. But, one person I will always trust in Jonathan because he always has athletes best interest at heart. And he doesn't just give you workouts, he makes sure to push you to be great every single day, every single rep. And this is what people/athletes need nowadays.