Our Philosophy
Exercise is about improving quality of life — not just appearance.
Training for the
decades ahead.
Mornington Peninsula Fitness was founded on a simple belief: the purpose of exercise isn't to look good for a season — it's to build a body that serves you well for a lifetime.
Inspired by the latest research in longevity science, exercise physiology and performance coaching, we created a space where people of all ages can develop strength, improve movement quality, and build the physical resilience they need to live fuller, more capable lives.
We're not a traditional gym. We don't measure success in six-packs or personal bests alone. We measure it in a grandmother who can get up from the floor unassisted. A teenager who moves with confidence on the field. A professional who has more energy at the end of the day than the beginning.
Our Mission
To help people of all ages build stronger, healthier, more capable bodies through evidence-based coaching and sustainable training.
Our Vision
A community where strength training is recognised as the most powerful tool for improving quality of life — at every age.
Excellence
We pursue the highest standards in coaching, programming and client care.
Evidence
Every program is grounded in the latest research in exercise science and longevity medicine.
Inclusivity
Strength training is for everyone — regardless of age, experience or background.
Your team.
Jay Bartle
Founder & Accredited Personal Trainer
Jay Bartle brings deep experience as an athlete, coach, and trainer to Mornington Peninsula Fitness Facility. His rugby union career spans New Zealand, the UK, Spain, and Australia, giving him a global perspective on performance, coaching, and physical development. Jay's resilience has been shaped by his own health challenges, including significant knee injuries and a debilitating autoimmune disorder. His dedication to fitness played a vital role in his recovery, forming the foundation of his passion for helping others build stronger, healthier lives. Whether you're looking for fitness training on the Mornington Peninsula or personalised 1:1 support, Jay is committed to building better health for every member, no matter where they're starting from.
Kasey Jaeger
Accredited Practising Dietitian
Kasey is an Accredited Practising Dietitian who helps you make sense of nutrition and build healthy habits that work in real life. From improving your everyday eating and energy to supporting your health and fitness goals, Kasey takes a practical, evidence-based approach without restrictive diets or cutting out the foods you enjoy. The focus is on creating habits you can maintain, so healthy eating becomes part of your lifestyle, not another short-term fix. Appointments are online via zoom and bookings can be made on her website thekaseyjaeger.com.
Coach Harry
Strength & Conditioning Coach
Harry brings a strong blend of academic knowledge and high performance coaching experience to Mornington Peninsula Fitness. He is currently completing a Master of Teaching in PE and Biology, supported by a degree in Exercise and Sports Science specialising in applied sport science and coaching. He has worked across several respected sporting programs, including Rowville Sports Academy, Dandenong Thunder, Bentleigh Greens and Alamein NPLW. Alongside his strength and conditioning work, Harry has spent five years coaching soccer, contributing to senior women's programs at Mount Martha Soccer Club and Alamein NPLW. Passionate about training and the gym environment, Harry is committed to helping members improve their fitness, confidence, and performance.
Marni
Acupuncturist & Chinese Herbal Medicine
Marni is an acupuncturist, Chinese herbal medicine practitioner and Qi Gong instructor, offering a compassionate and holistic approach to health and wellbeing. She founded Trees Acupuncture and Wellness in honour of her younger sister, Tasha Rees, whose encouragement inspired Marni to pursue her studies and follow her life's path. She holds a Bachelor of Health Science (Chinese Medicine), is registered with AHPRA, and is a member of AACMA. Her maturity and life experience shape a nurturing, supportive style of care. Marni discovered Chinese medicine during her own IVF journey, transitioning from patient to practitioner, and now lives locally on the Mornington Peninsula with her two children. Marni has a special interest in women's health, pregnancy and fertility, as well as supporting individuals seeking greater mindfulness and energetic balance. She provides treatments including acupuncture, herbal medicine, cupping, moxibustion and facial rejuvenation acupuncture, assisting with stress, sleep, digestion, immunity, energy and general wellbeing. Through both her clinical work and Qi Gong instruction, Marni is dedicated to helping people restore balance, improve vitality and cultivate a deeper sense of wellness.
Book with Marni — Trees Acupuncture and WellnessMassage Therapist
Remedial Massage
Bio and photo coming soon.
Ready to get started?
Meet our coaches, see the facility, and discover how evidence-based coaching can change the way you train — and live.
Book Your Consultation