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Welcome to Full Life Functional Fitness. We believe health and confidence should give you the freedom to say “yes” to life. Our culture is safe, supportive, and built on accountability, helping baby boomers and middle-aged adults feel better, move easier, and keep that vitality.

We specialize in functional training—building the real-world strength, balance, and agility necessary to keep you active and independent at every age. Founder Jason Klein holds a Master’s in Exercise Science and specializes in helping clients overcome chronic pain and move with newfound confidence.

Get expert coaching tailored precisely to your goals and lifestyle, delivered through both at-home sessions (personal training in Winter Garden) and our cutting-edge online coaching. We meet you where you are, bringing the highest level of expertise directly to your living room or screen.

We offer specialized Muscle Activation Techniques (MAT)—a hands-on approach to relieve nagging aches and pains by restoring proper muscle function. This therapeutic approach ensures you move with greater ease and confidence, making your workout program safer and more effective.
Don't just take our word for it—see the incredible transformations our clients have achieved. From significant weight loss in Winter Garden to incredible strength gains and renewed confidence, our members prove that our proven system works. Check out their success stories and Google reviews to see why we are the top choice for personal training in Winter Garden.

Jason Klein is the founder of Full Life Functional Fitness and a dedicated personal trainer in Winter Garden with a Master’s degree in Exercise Science. After 20 years of living with chronic back pain, Jason overcame his limitations through safe, functional training. His personal journey fuels his mission: to help baby boomers stay strong and active, setting a legacy of health and vitality for their families.
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At Full Life Functional Fitness, we offer highly specialized programs designed to restore your foundation of movement, strength, and confidence. Our programs are built on the expertise of a Winter Garden personal trainer with a Master's in Exercise Science, ensuring you receive a safe, scientifically backed path to longevity. We offer a hybrid model that maximizes flexibility, meeting your needs through both intensive online coaching and dedicated personal training in Winter Garden.
A one-of-a-kind hybrid program that combines online coaching and in-person guidance to relieve pain, restore proper movement, and build a consistent fitness routine in just 90 days.
A specialized, hands-on service to identify and reactivate weak muscles, resulting in less pain, more mobility, and greater strength for daily life.
at-home sessions where Coach Jason brings equipment directly to you, reinforcing therapeutic movement patterns specific to your body’s imbalances.
Why should I choose Longevity Functional Fitness over a regular gym?
Our personal training in Winter Garden and online coaching services are specifically designed for baby boomers and middle-aged adults who want to regain strength, improve balance, and stay active and independent for life
MAT is a specialized, hands-on treatment where we identify and re-activate weak or inhibited muscles. This is key to relieving chronic aches, reducing pain, and ensuring your body moves correctly before and during exercise.
Our online coaching provides you with a customized program, nutrition plan, and accountability coaching that you can follow from anywhere. It's the perfect solution for busy clients who need expert guidance and flexibility.
Yes. For local clients, we offer at-home personal training in Winter Garden where Coach Jason brings his equipment and expertise directly to your house to maximize convenience and privacy.

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