Shelley Ballestrazze – Owner/Pilates Instructor

Growing up in Boulder, CO, Shelley was very active in sports but struggled constantly with injuries and chronic lower back pain.  As the most injured player on her high school basketball team, she now knows the importance of regular stretching and a flexibility program.  She tried Pilates in early 2001 as a means to cure her repeated running injuries and to alleviate muscle tightness.  After steady practice, she discovered she was able to live pain-free and became an advocate for the Pilates Method.  She worked in the corporate world for 20 years and prior to becoming a Pilates instructor, she finished up her corporate career as a computer technician and software trainer.

Going through a very rigorous and comprehensive 650-hours initial training program, she earned her Pilates certification in 2003 through Body Kinetics, under the tutelage of Master Instructor, Carol Appel . After completing her training and internship at Body Kinetics in Mill Valley, CA, she opened her first studio in 2005, Pilates of Marin. Her clientele quickly grew and in 2008, she expanded, doubling the size of her previous studio.  In 2009, she relocated to Oregon and in 2010, decided to sell Pilates of Marin to a trusted friend and colleague.  She opened NW Core Balance in Tualatin (Portland), Oregon in 2011.

As a breast cancer survivor, Shelley has worked extensively with individuals post-cancer treatment.  Undergoing two surgeries and radiation therapy treatment has truly helped Shelley to understand the physical needs of all cancer survivors.

When not teaching Pilates, Shelley enjoys mountain biking, running, snowshoeing, and spending time with her husband and two dogs.

Amy Holstein – Pilates Instructor

Amy has always had a passion for health and fitness. As a serious yoga practitioner, Amy tried Pilates in 2006 as an adjunct to her yoga practice. Pilates appealed to her sense of structure and she loved the deep strengthening and physical transformation she felt in her own body. Since completing her Instructor certification in 2010, she has enjoyed teaching creative, challenging and effective workouts, designed to meet the needs of students of all levels and abilities. She believes Pilates is an amazing way to strengthen and align the body, avoid injury and build a stable foundation for other forms of exercise and activities. When not in the studio, she enjoys hiking with her dogs, horseback riding, yoga and exploring life with her two kids and husband.

NW Core Balance | Amy Holstein
NW Core Balance | Amy Holstein

Sara Servi – Pilates Instructor

Sara is a certified Pilates instructor and personal trainer who moved to Portland from LA, where she worked as a TV writer. For Sara, a fitness and health fanatic who loves the outdoors, sitting all day in an office was wreaking havoc on her body and mind. She discovered Pilates several years ago, when she was suffering from a hip-flexor injury and lower back pain. Since then she has practiced it diligently as it continues to bring her immense relief and joy. After she completed her 600-hour BASI (Body Arts and Science International) Pilates Teacher Training, she followed her heart to Portland to teach full-time.

She believes strongly that Pilates is the best way to evenly strengthen the body and build a stable foundation for all other forms of exercise. It can improve a tennis swing or swim stroke, as well as heal an injury. Pilates makes Sara feel strong, healthy, and empowered, and she strives to help her clients feel the same.

Kimberly Beattie – Pilates Instructor

Kimberly was a lifelong fitness enthusiast but didn’t became a student of Pilates following years of physical therapy and debilitating pain. Her last Physical Therapist applied the principles of Pilates to her treatment in an effort to alleviate her chronic pain but it wasn’t until she became of student of Pilates that she realized she could live with her pain controlled. She discovered that with strength and flexibility that Pilates brought, she realized it brought her a more balanced life in mind and body.

Her love of Pilates led her to a rigorous 600-hour BASI (Body, Arts, and Science International) teacher training program. In addition to teaching at NW Core Balance, she also teaches mat classes at Wilsonville Parks and Rec. Kimberly has experience teaching those with challenging issues, primarily those with MS and teens with autism. She holds a BA in Sociology from Pepperdine University and when not teaching Pilates, she escapes to Pacific City with her family as often as possible!

Kimberly Beattie | NW Core Balance
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