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At Challenge Fit AZ we love helping our clients to reach their goals.


Whether it be pain reduction, in season or between seasons athletic training, weight reduction or gain, flexibility, nutritional advice, confidence building, youth mentorship through fitness, or general health and wellness; we aim to help you to bring out your best.  We strive for excellence and do our best to allow excellence to shine in our clients.  Here's what a few of them have to say about us:

"Sean Neff has been our son Seth's trainer for several years. Sean is so 
wonderful with our son, who just turned 16, and needed a good workout. He is a a terrific role model, showing so much patience and respect, that it is no wonder that Seth looks forward to working out with him every week. He is the first exercise trainer that has bonded with our son, and Seth is getting stronger and more confident due to the exercise program he created for him.
It has been a great experience for all of us, having Sean in our lives, and I 
would recommend him highly."

-Marcia Lichtig

"Sean has been my personal physical fitness trainer for several years.  He does a fantastic job keeping me fit, while working around injuries to avoid any unnecessary strain or pain.  I have knee issues and a hip replacement, yet Sean designed cardiovascular, strength and stretching programs that really work for me."

-Bruce Bolkin


"My son has been training with Sean for many years and not once have I seen Sean in anything but a positive mood.  He really cares about the health and well-being of his clients - a wonderful combination of knowledge and kindness.  I am so happy to have found such a positive role model for my teenager!"

-Sandi Sherman

Sean is one of those rare instructors who is both very knowledgeable and super friendly. He is intuitive and knows when to push you and when to let you off the hook. Whenever I have a physical issue he knows how to help. And my classes with him are something I look forward to --not something one normally says about working out.

He works well with men, women and kids. I cannot recommend him enough!

-Erin L.


Sean Neff should list himself as a MAGICIAN, because he makes running fun.  When something's fun, I do it.  When I do it, I get results.  Parachutes & frisbees on the beach + Sean's positive outlook & humor = a winning formula.

-Laurie P.


Sean is amazing!  He is one of the most positive people you will ever meet.  He always comes to our house with a huge smile on his face and he brings a great energy.  He stretches with my son a couple of times a week to keep him in good condition for the sports that he plays.  He talks sports the entire time because he knows that's how to keep our child's interest and it works.  Our son really enjoys working out with Sean because it's fun.

Sean also works out with my husband and my husband enjoys these workouts, even though he hates to get up in the morning.  

One of the things we appreciate about Sean is that he has multiple credentials and certifications and is always looking to expand his knowledge base about the human body.  In our experience, this differentiates him from the majority of the other trainers out there.

-Sharon B.


"Sean is a first class trainer who truly values his clients.  His workouts successfully balance fun, hard work and individual attention.  He is a master of making each workout fresh and different and keeps a close eye on "what's new" in the fitness world.  For the past couple years, Jana and I look forward each week to our Sat am workout w Sean.  We consider Sean both our trainer and friend."

-Jon Goodstadt


"Sean has been training me throughout the summers to prepare me for basketball and he shares my passion for the game. He has the patience to keep up with where I am both physically and mentally. He always has everything planned out to target specific muscles for different skills. He has taught me to persevere and to keep trying to reach my goals. He overachieves in all of his tasks and makes his clients feel better than ever. He truly is the number one guy that I go to for any workout advice."

-Dakota Weisner


"Sean has been a strong and positive influence for many years on my teenage son Harry, who has struggled with physical fitness his whole life.  Sean is able to connect with Harry right where he is at, both physically and emotionally, at the start of each session.  He then guides Harry through his exercises, sometimes in a way that Harry doesn't even realize how much work he is doing.  Perhaps the best compliment I can pay Sean is that even though he is my son's trainer, Harry considers him a friend!"

-Doug Binzak

We found Sean through a physical therapist who recommended him. We were only in LA for 8 weeks but needed someone to work with our 13-year-old who was recovering from surgeries a few months earlier and still weak. Sean was incredibly fun for our son -- he did what our son liked, skateboarding, soccer, basketball and every kind of fitness/exercise that could help. He knew how far he could push to get the most out of our son with still workring safely. He also helped him with exercises prescribed by a PT. He was a pleasure to work with from my perspective, and my son completely looked forward to his time with Sean. We cannot recommend him more highly!

-Pamela R.



I joined a boot camp a couple of years ago which was how I first got to know
Sean Neff. He was one of my best instructor During my 6 week enrollment In camp. I soon learned why everyone was happy to see him, it was one of my best workouts. The time went by so fast and I felt so good afterwards, which I don't usually feel after a workout

The next time I saw Sean was through a friends referral. I had asked her if she knew of someone who could help my son with his fitness training.

Sean has helped my son lower his mile time by three minutes. My sons mile time used to be 10mins and now it's 7 mins. He is not only a 
Trainer but a mentor for coaching kids. My son is always
Happier after he has had an hour with Sean!

-Jacqueline C.



"I do not like to work out - period.  However, in the past few years having worked with Sean/Challenge Fitness, weekly I am beginning to change that view!  Sean understands his clients and their different needs, levels and mind sets...... He seamlessly turns your work out ethic around to better suit your individual needs.  I can honestly say I now enjoy working out - he has managed to make me think I enjoy every minute of his secret attacks while his easy way and comic relief fool you into thinking you want to feel like you have been hit by a brick wall every session!!!
Sean has also worked with my teenage son, with conditioning for each upcoming sport season.  Sean has a great way with kids of all ages and customizes every work out for all their different ages & abilities.  I would not hesitate in recommending him to my friends & family"

-Carole Cotter

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