Our Philosophy

At ZenRock Fitness we believe optimal wellness is an art as well as a science. We guide you to optimum long-term health by combining Eastern philosophy with Western technology. ZenRock focuses solely on the individual. Our private rooms allow for high energy one-on-one training sessions free of external distractions.

Your time with us will harmonize and motivate you, ultimately laying the foundation for lasting strength, well-being, and joy in your everyday life.

Our mission is to enhance your life by providing you with a broad range of fitness and personal services in an atmosphere of comfort and stability.

Our Staff

ZenRock’s staff has been carefully selected to represent the very best in their respective fields. Our professional certified trainers are guided by a steadfast belief that one-on-one training in a private studio, devoid of distractions is the optimal way to achieve significant, long-lasting results.

Petra Dumm: Owner and Founder; Personal Trainer and Yoga Instructor

Petra Dumm opened ZenRock fitness in July 2007 with the intention of creating a safe and comfortable space where people of all ages, abilities, and bodies could set personal goals and achieve results. An athlete since age six, Petra competed in basketball through college, training with many coaches and learning their techniques for getting the results they wanted from her. In 2000, having just started playing for College of Marin, she began doing yoga to cope with the demands of scholastics, athletics, and a full time job. Her early yoga practice gradually shifted her definition of real fitness and she wanted more from her body.

Petra began to see fitness in terms of lifestyle, not a game; in terms of life quality, not a flash performance. ZenRock mentality was forming. Far from the male-driven, sport environment she grew up in, Petra wanted to create a space where the work was difficult but skilled trainers were empowered to form trusting relationships with their clients, work with their body today, and be able to quickly adjust an activity before challenge could become injury.

Today, after nearly a decade in service to the Redmond community, ZenRock Fitness is a comprehensive fitness experience, with opportunities for small group education, weekend outdoor activities, and annual yoga journeys to such beautiful and luxurious locales as Tuscany (2010), Costa Rica (2015), Bali (2016), and Greek islands (2017).

Petra is proud of her staff of trainers, her clients, and her ZenRock family, all of whom are dedicated to the ZenRock mission: bettering lives through movement, strength, meditation, diet, adventures near and far, and a safe space to work on individual goals.

Professional certifications:

• ACE Certified
• Certified Yoga instructor
• CPR/First Aid Certified

Dwayne Valeau: Personal Trainer

“I have been involved in the fitness industry for the past ten years. I began training friends and clients in Atlanta, Georgia working at both Sportslife (now Crunch Fitness) and Jean’s Bodytech. I moved to Seattle to continue my education in Public Health, but have now changed my focus to Physical Therapy.

“After suffering a major knee injury in college my weight ballooned to 248 pounds in 1997. By changing my eating habits and incorporating proper training techniques, I was able to reclaim my life. This success has motivated me to help clients accomplish their weight loss objectives. My personal experience with weight gain and loss has given me the empathy required to help people on the most basic level.

“Many people feel trapped in their current physical existence. They are unable to break the cycle or lack the skills to realize their dreams. My goal is to guide and support you in attaining the fitness and well being you deserve. Stop just existing and start really living your life!”

Professional Certifications:

• AFPA Certified
• CPR/First Aid Certified

Nova Guthrie: Personal Trainer and Yoga Instructor

Nova has been in the gym most of her life beginning with competitive sports at the age of 10. She was a pre-med major in college and earned a degree in Biology.

After a long break from the fitness world Nova returned to her love of health and became a certified fitness trainer in 2006. She continues to study and holds other certifications including Fitness Therapy and Mind/Body Healing. Nova is currently an Elite Trainer with the ISSA.

Nova has been practicing yoga since 2003 and teaching since 2005. Since the beginning of her practice, yoga has been Nova’s place to go and her safe haven away from life’s stresses. She began teaching in order to share that special gift with other people. Her personal practice is grounded in the Ashtanga tradition, but her teaching style is something that has grown from that foundation into a power Vinyasa flow that focuses on movement with the breath. Nova has found that yoga and personal training are two complementary tools on the path to wellness and has a special interest in working with clients who are coming back from injury and/or surgery or are dealing with chronic health conditions.

Professional Certifications:

• ISSA Elite Trainer
  • Specialist in Exercise Therapy
  • Youth Fitness Trainer
  • Specialist in Fitness Nutrition
  • Specialist in Senior Fitness
  • Certified Fitness Trainer
• Yoga Fitness CEC Yoga Instructor
• BS in Biology, Morningside College

Heidi Ellis: Personal Trainer

Heidi has eleven years of training experience, with eight of those years at ZenRock Fitness. She holds a bachelors degree from Eastern Washington University. Heidi loves working with all kinds of people, helping them feel better and gain the ability to enjoy more activities. Her clientele ranges from very fit individuals to people needing extra care in their routines.

Heidi has loved fitness her entire life and got her start “doing” step aerobics in the living room with her mom and a Jane Fonda workout VHS. Now she loves working out, hiking, backpacking, yoga, snowshoeing and nutrition. In her free time, Heidi enjoys spending time with her husband and daughter, planning events as a volunteer at the church she attends and hosting guests at her house.

Professional Certifications:

• BS in Health Promotion and Wellness, Eastern Washington University
• CPR/First Aid Certified

Mehdi Ansari: Personal Trainer

“As a child I was extremely passionate about fitness. My family thought I was crazy when I started collecting posters of Bodybuilders, reading fitness magazines, and writing out workout plans as a small boy. I guess it went hand in hand with the insane amount of time my cousins and I devoted to soccer. By the time I was a teenager, I was an advocate of the gym. After a mandatory 2 years in the Iranian Military, I came to the United States, where I continued to enhance my education, and experience within the fitness world. Before indulging myself in college where I acquired an exercise science degree, I trained vigorously in mixed martial arts. I have incorporated MMA within certain exercise programs with my clients with great results. Soon after, I continued and still continue my path with my dedication to Bodybuilding. I have competed and helped others to compete as well.

“Overall my intent and ambition is to help others find solace within their lives by educating others on the importance of physical activity, as well as helping the population achieve reasonable goals, in an extremely safe and effective manner. Over the years I have successfully established a wonderful and loyal clientele and continue to surprise them and keep their workouts exciting in order to fulfill their lives!”

Professional Certifications:

• National Strength and Conditioning Association (NSCA) Certified
• Associates of Applied Science degree in Exercise Science
• CPR/First Aid Certified

Margaret Greenwade: Personal Trainer

“My passion for physical fitness has translated into a career in helping others realize their potential! I pride myself with creating a unique, fun and challenging exercise program that produces a higher level of fitness and energy. Corrective exercise techniques are incorporated into my training sessions to determine muscle imbalances and aid in proper body movement. I help clients find their inner strength and realize that the hard work is worth the journey. With my knowledge and the client’s dedication, we will be a great team!”

Professional Certifications:

• NASM Certified Personal Trainer
• NASM Women’s Fitness Specialist
• NASM Corrective Exercise Specialist
• NASM Fitness Nutrition Specialist
• CPR/First Aid Certified

David Flenniken: Yoga Instructor and Sage

It is with an open heart and gentle acceptance that David shares his love of yoga. David is a grounded, sensitive, intuitive instructor that believes firmly that when someone actively practices the fundamental yogic principles; their lives tend to come back into balance.

Building upon the fundamental yogic principles, he has not only learned to overcome pain and physical limitations, but has built a life of abundance.

He attended college, graduated with honors and went to work at Microsoft. He worked as a software engineer testing the Windows product family – effectively affecting the lives of billions of people! During this time, he has continued to passionately explore the subtle aspects of yoga including meditation, pranayama and conscious living. After raising a family and retiring from Microsoft, yoga has taken a more predominate roll in his life.

His asana practice is a Hatha & Vinyasa combination rooted in basic postures. The style is slower with a focus on breath work, strength and flexibility. Subtle Spiritual Living concepts are discussed and practiced as appropriate.

Professional Certifications:

• Registered Yoga Teacher (200-hour), 8 Limbs Yoga Center
• Founder, AmorStyle Healing & Yoga

Britt McWilliams: Nutrition Coach & Personal Trainer

Born and raised in Kirkland, WA, I have been specializing in Group Fitness since 2012.  In 2016 I became a Master Trainer for Jillian Michael’s and travel throughout the Northwest region training instructors on her Bodyshred program.

Striving for continuing education and having a strong desire to learn, I shifted my focus to nutrition in 2014.  Immediately I noticed a giant lack of coaching and positive support systems for the average individual looking to make smart choices. So I took the love, happiness and high energy aspect of my experience with Group Fitness and combined with the true science based facts of nutrition.  Using real food to reset the metabolism, but catering this theory to adapt to the specific client, rather then using cookie-cutter methods.  My biggest goal is to show every client I encounter that “eating clean” and being “healthy” doesn’t need to be overwhelming or scary.  In fact, it should be fun!  I strive to not only provide unconditional support but educate throughout the entire process so that clients can be in charge of their own lives. And that they eventually feel confident to continue making positive choices permanently.

Working with me, clients can expect a fully customized nutritional experience catered to them, their needs, and their immediate goals.  Whether it be with training or diet help, the coaching support is always unconditional and non-judgmental.

Professional Certifications:

• Nutritional Coach
• AFAA Group Instructor
• PRECISION Group Instructor

Diana Jorgensen: Fitness Trainer and Yoga Instructor

Diana started going to the gym at 12 years old and loved it. Exercise became even more important when she found out she was hypermobile, so she is consistently working on strength conditioning. As a trainer Diana is concerned about ensuring that clients feel their exercises in the correct muscles, have good form, and push just enough to keep moving forward.

She truly enjoys working out and exercising, to her it is much better than any spa day. Thankful everyday for what her body can achieve; whether it’s hiking with her husband and dog, skiing or paddle boarding with her son, or out for a jog.

Professional Certifications:

• Yoga Certification through 8 limbs, Seattle
• ISSA Certified Fitness Trainer