Small group strength training sessions with personalized adjustments for women of all ages and fitness levels.
Virtual coaching with daily tips, exercise adjustments, and progress check-ins for flexible fitness from anywhere.
One-on-one stretching sessions to improve flexibility, reduce stiffness, and enhance recovery.
Guidance on diet and nutrition to complement fitness goals and promote overall health.
24/7 access to a private, clean facility with quality equipment for independent workouts.
Tailored strength and mobility training designed specifically for older women to improve quality of life.

Empowering women to build strength, confidence, and community through personalized fitness.
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Onyx Athletic Performance is a women's fitness and strength training gym in Mesa, AZ, dedicated to helping women of all ages and fitness levels achieve their health goals. Led by expert coach Haley, we offer semi-private coaching, online personal training, and assisted stretching in a supportive, private environment. Our focus on education, nutrition, and community ensures effective workouts and lasting results. With a 5-star rating, we provide affordable, personalized programs to boost strength, mobility, and overall well-being.
I did Haley's online personal training and was thoroughly impressed. She had helpful & educational tips everyday, was quick to adjust any exercise based on my needs, and regularly checked in on my progress. Three months in and I'm loving the changes in my body!
I absolutely love coming to this gym, Haley is amazing! Everyone is so friendly and welcoming, and the training program really gives you a solid, effective workout. I’m motivated to show up for myself and can’t wait to see my growth! Highly recommend!
I highly recommend Haley for your fitness and nutritional coach. Her semi private program is convenient and highly effective. As a new senior beginning a strength training program, Haley has been supportive and encouraging and she adjusts to provide the unique program for me as I gain strength and confidence. This is exactly the program I need to increase strength and to maintain and improve mobility as I age. Seniors should not miss this opportunity to improve their quality of life through fitness and nutritional support.
Haley is a wonderful coach, who has taught me so much about lifting and exercise in general! She really cares about each woman in her semi-private coaching classes and is always there to assist you when you’re struggling. I was a complete beginner when I started and now I’m stronger than I have ever been before! I also love the assisted stretches she offers. I get one every week and I can tell the difference with my stiffness and flexibility!
Commit to 3 months to really get the habit built up! Good sense of community and affordable personal training option! Haley is patient, professional and will meet you where you’re at. She helps with nutrition and gym education as well! The gym is private and clean with good equipment— you can go to the gym on your own any time and as often as you want in addition to the small group workouts with all women of all ages.
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