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.

She began to see fitness in terms of lifestyle and not a game; in terms of overall life quality and not a flash performance. ZenRock mentality was forming: a fitness center where the work is difficult but compassionate trainers are empowered to form strong, sustaining relationships with their clients; help them work with their body today; and who can quickly adjust an activity before challenge becomes 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 the Greek Isles (2017). She is planning a second visit to Costa Rica in February 2018. Please see Costa Rica 2018 for more information in the ZenRock Fitness blog or from the link on the home page.

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

I have been in the gym most of my life beginning with competitive sports at the age of 10. I was a pre-med major in college and earned a degree in Biology.

After a long break from the fitness world I returned to my love of health and became a certified fitness trainer in 2006. I continue to study and recently completed my Specialist in Corrective Exercise certification. This was also my final course to complete my Master Trainer Certification with the International Sports Sciences Association.

I have been practicing yoga since 2003 and teaching since 2005. Yoga has always been my safe haven from life’s stresses. I began teaching in order to share that special gift with other people. My personal practice is grounded in the Ashtanga tradition, but my teaching style has grown from that foundation into a slower flow that focuses on movement with the breath. I believe that yoga and personal training are two complementary tools on the path to wellness and I have 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 Master Trainer
  • Specialist in Corrective Exercise
  • 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
• CPR/AED

Mehdi Ansari: Personal Trainer

As a child I was extremely passionate about fitness and my family teased me for it. I was reading fitness magazines and writing workout plans as a small boy while spending every other moment playing soccer with my cousins. By the time I was a teenager, when not in class, I could always be found in the gym. After serving a mandatory 2 years in the Iranian military, I came to the United States where I earned my BS in Exercise Science. At the same time, I trained vigorously in mixed martial arts and began competing in bodybuilding.

Overall my intent and ambition is to help others develop fitness through education and movement. I love helping my clients define health goals and then creating interesting and engaging workout plans achieve them. I am comfortable guiding my clients through yoga poses and martial arts reps, and always safely. I also integrate bodybuilding techniques and am always willing to train aspiring competitive bodybuilders. Over the years I have successfully established a wonderful and loyal clientele and love the way they enrich and teach me every day!

Professional Certifications:

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

Heidi Ellis: Personal Trainer

Heidi Ellis has been a personal trainer for 12 years. She found her love for health and fitness at a young age joining her mom in Jane Fonda step aerobics in the living room and challenging her dad to sit up competitions. She received her BS in Health Promotion and Wellness for Eastern Washington University and has been training ever since. She has been at ZenRock Fitness since 2008 and has loved being part of the team. Her greatest professional joy is being invited on her client’s journeys and watching them gain confidence and stamina.

When she isn’t training, Heidi loves spending time with her family, adventuring in nature and laughing with her friends.

Professional Certifications:

• BS Health Promotion and Wellness Eastern Washington University
• CPR/AED

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 and 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

Jonathan Resuello: Personal Trainer and Yoga Instructor

I am eager to meet the ZenRock community and bring my unique approach to fitness here. I hope to help you meet your fitness goals – from building a stronger core to increasing your endurance – and support you in defining new goals as you begin to feel stronger, more confident, and ready to take on new challenges. Let’s grow together in balance, flexibility, and strength while harnessing the strength within you.