Mentors

Rachel Piper

Rachel Piper is the owner and lead trainer for the Size Diverse Pilates Teacher Training Programs.

As a comprehensively trained plus-size Pilates Instructor [NCPT], Rachel advocates for body neutrality and size inclusion [SITA certified]. She believes in teaching the PERSON in front of you by finding and using the right tools to help them succeed in their movement practice, a philosophy she learned from her mentor Carey Sadler.

Rachel is also passionate about creating spaces where all bodies feel seen, respected, and empowered. She is also an advocate for the neurodiverse.

Read more about Rachel on her About page.

Carey Sadler

Carey Sadler is the owner and lead instructor at Rivercity Pilates in North Liberty, Iowa.

She completed her comprehensive certification through Body Precision Pilates (Rosemont, PA) in 2002 and is also certified by the Pilates Method Alliance.

An Iowa native, Carey grew up in Evansdale and graduated from the University of Iowa in 1997 with a B.S. in Chemical Engineering. After a short time working as an engineer, she discovered her true passion—helping people feel their best through movement. She transitioned into personal training and soon found her calling as a Pilates teacher.

Carey loves combining her technical knowledge of anatomy and physiology with the art of coaching and the psychology of teaching movement.

In 2009, she founded Rivercity Pilates, which has grown into a warm, supportive community where clients and staff alike embrace movement as a lifelong tool for health. The studio is known for its welcoming, inclusive environment—where every body fits in.

Since 2011, Carey has also been training and mentoring Pilates teachers. She is passionate about helping instructors embody the method in their own practice, develop effective teaching skills, and, most importantly, embrace their own authentic voice as teachers.