We are passionate about changing lives through personal fitness.  We practice what we preach and have gone through the process of changing our own bodies.  We understand the level of commitment it takes, and we will be with you every step of the way.  We know how much confidence and self-esteem affect every aspect of life, and we also know that having a lean, fit, healthy body is the quickest way to gain that confidence.  We are Fit Style, and we want to help you change your life with a personal training and fitness program designed just for you! Schedule your fitness consultation with us in Pleasanton today!

Meet the Team

About-Me2Jenn Brown- Longsworth

Master Personal Trainer

I am IN LOVE with what I do! I began my career as a Certified Personal Trainer in 2005 and started my own business, Fitness Is a Lifestyle, in 2006. Fit Style emerged from that in 2014 and is now an ever-expanding business.  Working out is my passion, and I love being able to help other people develop the same love for health and fitness that I have.

My ultimate objective with Fit Style is to help people feel good about themselves. Self-confidence (I believe) is the key to all success in life, and nothing builds self-confidence better than a strong, lean, healthy body. I love helping people realize their physical potential, and being there when they break through mental barriers by doing things they never thought their bodies could.
I am ecstatic about life and the opportunity that Personal Training affords me to share my excitement with others – it’s amazing to see my clients’ attitudes change right before my eyes some days! I do what I love and love what I do, and if I can help even one person improve their quality of life through fitness, I have met my goal.

CaseyCasey Pierce

Master Personal Trainer

I have been a personal trainer since 2010 and am excited to bring my knowledge to the Fit Style team. I am a nationally qualified bodybuilder specializing in nutrition, functional training, sports performance and competition prep/offseason training.

Guiding my clients through their success journeys is what brings much life into my area of work. I am eager to help clients exceed their goals by tailoring workouts to meet their specific needs and interests as well as coming up with a nutrition plan that compliments their fitness goals.

I love sharing my passion and knowledge with others, and look forward to challenging new clients to be their very best!



unnamed (16)Rheanna Rinauro

Master Personal Trainer

My passion for fitness began as a young athlete. I have been around health and wellness my entire life and it quickly became something I love. I graduated from California State University of Monterey Bay in May of 2014, earning a bachelors degree in Kinesiology (also known as sports medicine).

During college I interned as a physical therapist as well as an athletic trainer. I then took my love and passion for fitness/sports and the well being of others and turned my career into personal training. I specialize in sports conditioning/performance, weight loss, strength training, functional training, kickboxing and nutrition. I make sure the workouts and overall programs are designed to meet the needs, interests, and goals of my clients.
Being a part of Fit Style, my goal is to help my clients feel excited about themselves and have a positive outlook on not only the way they look and feel, but their life as a whole. What is truly exciting to me is to see my clients change mentally and physically through fitness, health, and surpassing their goals. I love what I do, and I LOVE that I have the opportunity to share my passion with people!  Personal training brings happiness to my life, and feeds my soul! Fitness is what I LIVE for, it’s not just a lifestyle.



Jennine Hamblin,
Certified Personal Trainer

I have a Personal Training & Group Exercise certifications from the Aerobics and Fitness Association of America. I have been a dancer for 23 years, and a fitness professional for the past 6 years. I love working out and enjoy helping others to reach and surpass their fitness goals! My passion is to assist people in defining their vision of themselves and working hard to achieve it, while keeping it fresh, new, fun, and exciting. I love exploring new ways to make working out an enjoyable process! Every person is unique and I devise individualized plans to cater to the interests of each individual.

“It’s not about being the best. It’s about being better than you were yesterday.”





Maegan Swain,

My relationship with fitness started about 12 years ago when I reached a breaking point with myself. I was overweight and very unhealthy, so I started weight lifting & researching how to eat correctly. After successfully losing 30 lbs, the help of a trainer & a lot of dedication, I decided to get more disciplined and I began competing in the NPC. I did my 1st figure competition in 2008 & since then have competed in over a dozen competitions.
Prepping for shows not only transformed my body but it allowed me to become more disciplined in many other areas of my life. I learned a lot about myself & how far you really can push yourself.

Over the past several years I have developed a deep appreciation for exercise science & nutrition. I have completely embraced the lifestyle through consistency and adopting healthy habits. I want to share this love for nutrition & fitness with everyone who wants it! It is my pursuit and passion to help you reach your goals & create a lifestyle where you can KEEP those goals.


International Sport Science Association
Cardiovascular Exercise & Nutrition
Health Fitness Psychology
Alternative & Integrative Nutrition

Hobbies / interests:
Bike Riding