Jennifer Perez, BS, NASM CPT, NASM Nutrition Specialist, ACE GF, W.I.T.S. Educator

Jennifer has been in the fitness industry for over 25 years as a nationally certified group fitness instructor and personal trainer presenting multiple formats and training clients internationally. She is currently the owner of Perez Personal Training and teaches the W.I.T.S. Personal Training certification course at Sonoma State University and San Francisco State University. She is a NASM mentor and a PANC (Parkinsons Association of Northern California) trainer. Her certifications include the American Counsel on Exercise, the National Academy of Sports Medicine nutrition specialist and personal trainer as well as Pilates, Zumba, TRX and Les Mills.

Jennifer's extensive background in health and fitness includes National Aerobic Competitor, international competitive dance teams, 22 years of health club management,  fitness presenter, and trainer for instructors and private clients.  She brings her clients an extensive background in physical therapy, Pilates Reformer, Pilates Mat, senior fitness, youth personal training and coaching, nutrition, anatomy, physiology and dance.

She enjoys traveling and spending time with her family. “I have learned that I can best serve my clients by teaching them how to achieve optimal health through a balanced lifestyle. I believe that functional training translates into the enduring strength we need for the activities of our day-to-day lives.”

Ruth Taylor, BA, AFAA CPT
Ruth is a certified personal trainer through AFAA and SCW Fitness as well as a certified group fitness instructor.  She holds an Associate of Arts Degree in Fitness, Nutrition and Health from Santa Rosa Junior College.

Her training style is centered on each client; she specializes in creating exercise programs based on their needs and preferences.
She welcomes and trains all age groups, body types, special populations and athletes.  She also focuses on functional training by working with the clients balance, agility, flexibility and posture while focusing on proper form.

In her free time Ruth enjoys working out, participating in other group exercise classes, running, hiking, listening to music, dancing, gardening and hanging out with her friends and family.  Ruth's philosophy in life is to broaden your horizons and always explore new adventures.


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Marta Kaltreider, BA, NASM CPT, Certified Tabata GX
A world traveler and entrepreneur, Marta brings to Perez Personal Training a wealth of creativity, a passion for wellness and a natural instinct for successfully coaching you towards achieving your fitness goals. 

Certified by the National Academy of Sports Medicine as a personal trainer and a specialist in Tabata GX, Marta was inspired to become a certified trainer by observing many around her struggling with balancing the need to fulfill their fitness needs with their inherent fear of exercising. This led her to create a fun, accessible, convenient and effective training initiative for parents at her children’s school: The “10 Week Wellness and Fitness Challenge Fundraiser”. This initiative, continues to support many in their quest to establish healthy habits to live happier and healthier lives. As a trainer at Perez Personal Training, Marta endeavors to personally work with you so you too can fulfill your fitness desires and conquer your exercising fears.
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Marta never passes on an opportunity to enjoy a tasty meal in good company, engage in an interesting conversation or fuel her mind and body with a jog, a workout, a hike or anything fun and active: Mens sana in corpore sano.