QUALITY OF LIFE MIND-BODY CONNECTION RESILIENCE STRENGTH PAIN MANAGEMENT FAMILY SUPPORT
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Coaching and Community at Stout-Heart Fitness
This video has no sound, just images. This video provides a quick montage of scenes from Stout-Heart Fitness. The focus is on the supportive interactions between our coaches and clients. It includes a coach hugging a young girl, another coaching a man on kettlebell swings and celebrating with a high-five, and a coach assisting a young woman with a bodyweight exercise, followed by a celebratory high-five and a prize. Other clips show a coach and a young person reviewing notes, a young woman doing battle ropes with encouragement, and a young man completing a weighted carry with a smile. The video captures the sense of teamwork and personal achievement at our gym.
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About Stout-Heart Fitness
A strength and fitness gym in Lancaster, CA is owned by husband-and-wife coaching duo Matthew and Elspeth Jimmink. We are the only training center in the Antelope Valley serving the area’s neurodivergent population. We are also a top facility to help rehabilitate neurotypical athletes who suffer from chronic pain or other symptoms of injuries.
We are committed to building stronger, healthier, more resilient human beings. Our great coaches and supportive community will push you or someone you love to grow and heal beyond what was thought possible.
With guidance, hard work and passion, you won’t just become strong – you will become Stout-Hearted!
Personalized Coaching
Training plans tailored to the needs of each neurodivergent and neurotypical athlete.
Supportive Community
Join a motivated group of similar individuals and families in a supportive atmosphere.
Remarkable Results
Build strength and healthy habits for long-term results and lasting, life-altering change.
Training Programs
Strength Training
Physical conditioning provides you with a richer life experience, strengthening your body so that it can function as it should. Learn more about Strength training here.
Pain & Rehab
Alleviate chronic pain, increase mobility, enhance flexibility, prevent injuries, and promote faster post-workout recovery. Learn more about Pain & Rehab training here.
Neurodivergence
Strengthen the mind-body connection, build muscle, increase endurance, and achieve full-body physical strength.


Meet Our Founders
Recognizing that neurodivergent individuals and neurotypical people seeking relief from chronic pain in our area were underserved, Matthew and Elspeth Jimmink founded Stout-Heart Fitness to begin building stronger, healthier, and more resilient human beings. We’re proud to serve this community of truly remarkable people.
For our neurotypical clients, Matthew is especially interested in helping individuals understand their bodies and how they can manage chronic pain through targeted exercises. Elspeth is passionate about helping mothers navigate the emotional and physical challenges of maintaining a healthy pregnancy and overcoming postpartum issues.
Both founders come from a background rooted in physical fitness and using it to improve every aspect of an individual’s life, including mental, emotional, and physical health. We will make a difference for your neurodivergent child or ward, and if chronic pain is your challenge, we will help you find true relief.
Meet Our Coaches
Stout-Heart Fitness coaches are passionate and dedicated professionals, extensively trained in using highly targeted exercise to help neurodivergent and neurotypical athletes meet their health, resilience, strength, and well-being goals.

Josiah Leach

Annabel Reynaga
Coach

Joel Custodio
Coach

Elly Santamaria
Coach

Phoebe Leach
Coach

Chris Kelley
Coach

Isaiah Vazquez
Coach

Ezekiel Jimmink
Coach

Praise from Parents and Athletes
Contact Us & Get Started Today
Take the first step toward becoming Stout-Hearted! We’re here to guide and support you on your journey. Request an Assessment today if you’re ready to get started, have questions, or just want to learn more.










