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Personal Training, Nutrition Coaching and Wellness Coaching

Why work with Kellyn


Hi, I'm Kellyn Jason! I am an experienced personal trainer in Hudson, Massachusetts. My personal training certification is through the National Academy of Sports Medicine and I also hold Precision Nutrition L1 Nutrition Coach and a Pregnancy and Postpartum Corrective Exercise Specialist certifications.

With over 4 years of experience in personal training, I am passionate about helping my clients achieve their goals. I focus on behavior-based training and long-term habit changes and take a very hands-on approach with my clients, sharing the tools I've learned along my own journey. With a bachelor's degree in psychology, I help my clients achieve results and feel better, all while addressing the psychology behind making long-lasting changes. I am also

currently working on my Master's of Science in Exercise Physiology with a concentration in Physical Activity and Health Promotion at UMass Boston, where I am also a teaching assistant for undergrad health assessments course.


Client Testimonials


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Kellyn is my “life saver”! Two years ago, I broke my ankle at the age of 66, had surgery, and thought I would never get back to an active life. Then I met Kellyn. She worked beyond what I would have expected from a trainer. Following two months in physical therapy Kellyn became my personal trainer. She helped me rebuild my strength, balance and confidence and gave me the encouragement that I needed to heal.
Two years later, I am still working out with Kellyn. She supports me both physically and emotionally. Her supportive nature comes through time and again. She has helped me to maintain a strong and healthy body. I have worked out for many years, but as I get older and start to feel my age, Kellyn’s gentle push has kept me challenging myself to do more.
Kellyn has an extensive knowledge base. I am still a work in progress, but with her help I am making continual strides in my strength, endurance, mindfulness, and nutrition. I have great trust in her and have no reservations about referring her to others.



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