Fitness & Wellness

Fitness, Nutrition & Healthy Habits


You know the things you could be doing to feel stronger, have more energy, and take better care of yourself, but knowing what to do and consistently fitting it into everyday life are two very different things.

That’s where The Activation Effect® comes in.


Founded by Senya Borrelli, The Activation Effect® brings movement, nutrition, healthy habits, and self-leadership together in a practical, whole-person approach designed for everyday life.


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Fitness & Wellness Programs That Fit Real Life


Our approach isn’t centered on extreme workouts, restrictive diets, or trying to do everything perfectly. Instead, we help adults and youth discover realistic ways to move more, build strength, improve balance, mobility and flexibility, better understand nutrition, and create healthier daily habits that work for their lives.

Small actions matter. When we practice them consistently, they can create powerful momentum.

Youth Fitness, Nutrition, & Life Skills


Not every child is interested in competitive sports; and kids shouldn’t have to be athletes to learn how to move their bodies, build strength, and develop healthy habits.


The Activation Effect® offers youth fitness and nutrition programs designed to help kids and teens develop strength, balance, coordination, flexibility, mobility, body awareness, confidence, and healthier everyday habits.


Practical nutrition and wellness education helps youth begin understanding how movement, hydration, nutrition, sleep, and daily choices work together to support how they feel and function.


Programs are available for individual families, homeschool communities, schools, and youth organizations.

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Adult Fitness, Nutrition & Daily Systems


Maybe you want to become stronger, move more consistently, improve your nutrition, or simply feel like you're taking better care of yourself—but you're not looking for another all-or-nothing program.


The Activation Effect® offers adult group fitness, private fitness sessions, nutrition coaching, weight management support, and healthy habit education designed to help you create realistic practices you can continue using in everyday life.

We meet you where you are and help you build from there.

Private Fitness & Nutrition Coaching


Sometimes a more individualized approach makes sense.

Private sessions with Senya provide focused support around fitness, nutrition, weight management, healthy habits, and daily systems.


Sessions are designed around the individual rather than expecting everyone to follow the same plan.  The goal is to help you better understand what works for you and build skills you can continue practicing outside of your sessions.

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Wellness Workshops & Speaking for Schools, Businesses and Organizations


The Activation Effect® also partners with schools, homeschool communities, businesses, community groups, and organizations to provide customized wellness workshops, speaking engagements, and educational experiences.


Topics can incorporate movement, nutrition, healthy habits, self-leadership, personal growth, and practical strategies people can apply in everyday life.


Programs can be customized for the needs, goals, ages, and setting of each group.

Book a Complimentary Session to Learn More

Fitness & Wellness Programs in Walnut Creek & the East Bay


The Activation Effect® serves adults, youth, families, homeschool communities, schools, businesses, and organizations throughout Walnut Creek, Brentwood, Contra Costa County, and the greater East Bay.


Virtual fitness, nutrition, and wellness programs also make it possible to participate beyond our local community.

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Fitness & Wellness

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Senya Borrelli

Senya Borrelli is a fitness and wellness educator with more than 27 years of experience teaching people of different ages and abilities. Her approach is practical, encouraging, and adaptable, with a focus on helping adults and youth build confidence, develop healthy habits, and discover what they’re capable of next. Senya is the founder of The Activation Effect® and brings her background in education, fitness, nutrition, and behavior change to every experience she leads. Credentials: NASM Personal Trainer • NASM/AFAA Certified Group Fitness Instructor • NASM Certified Nutrition Coach • NASM Behavior Change Specialist • JumpSport® Fitness Trampoline Credentialed Instructor • JumpSport® Bounce & Barre Specialist

Book a Complimentary Introductory Session

The Activation Effect®

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