We opened GSD to build a room where people get after it together. This is how we grow it.

Most certifications hand you a certificate and send you home. That's the part we wanted to do differently.

We opened GSD because we wanted a room where people work hard and then stay a while. Not a turn-and-burn gym. Somewhere people actually want to be. That doesn't grow by adding machines. It grows by adding teachers.

So certifying here isn't finishing something. It's joining something. You get a room to practice in, instructors and members who already know your name, and if you want to teach, a studio actively looking to hire.

Mat Pilates and XFormers, taught by Piper Michelle Yi
September 8 to 13, 2026 · New Castle & Carbondale, Colorado

Get Pilates Certified!

Two certifications. One week.

Take both: $1,600. The two trainings meet on Friday the 11th, so they run as one continuous week. Start Tuesday, finish Sunday, certified in two disciplines.

Schedules may shift slightly depending on our trainees' availability. We'll confirm final times before the week begins.

Who this is for

You want to teach.

You leave certified in a named method you can carry anywhere. We are not running this as a side project. We are training the people we intend to hire, and everyone who teaches for us gets a complimentary membership at both studios.

You want to deepen your own practice.

You have no plans to teach, and you want to take your practice somewhere regular classes will never get you. You stop following cues and start understanding them. You come back to class a different person in it.

Piper is the founder of Slow Resistance Training and a Pilates specialist with twenty years in the fitness industry. A pioneer in Modern Pilates education, she helped build the foundation programs for some of the industry's most recognized names.

She teaches instructors not just what to do, but how to understand it and translate it into confident coaching from day one. She is also, plainly, fun to learn from.

  • Built the foundation programs for [solidcore], Lagree and BeFit

  • 350+ studio locations, 100+ cities, a dozen countries

  • 20 years in the industry

  • Founder of Slow Resistance Training [SRT]

  • Your lead trainer for a full year through the online course

@hellopipermichelle

Learn form Piper Michelle Yi

What you will cover

MPX Signature Mat

  • Principles: intentional movement and time under tension

  • The three parts of a Signature Mat routine

  • Music, BPM, song structure and exercise timing

  • Planning your programming and playlist

  • Exercise library: mobility, lower body, upper body, core and obliques, stretch

  • Coaching skills, layering, transitions, and building your first full routine

XFormers · Slow Resistance Training

  • The three principles: tempo, tension and time

  • The movement science behind each exercise

  • Precision cueing, the skill most instructors never learn

  • Intelligent programming on the Modern Pilates reformer

  • Delivering consistent, high-quality classes

  • Understanding the why, not memorising a script

  • One full year of access to the online course with Piper, your lead trainer

  • Your workbook, to guide your learning every step of the way

  • Certification in the method

  • If you go on to teach for GSD: a complimentary membership at both studios, and free rein on practice time

Every training includes

  • Prerequisites — None. Just register.

  • Refreshments — Provided.

  • Traveling in? — Ask us. We'll help you sort somewhere to stay. Glenwood Springs sits between the two studios, so if you're doing both you can stay in one place all week.

  • Cost — $900 per format, $1,600 for both. If cost is the thing standing in your way, talk to Heidi. We would rather have you in the room than not.

Good to know

Come talk to us

You do not have to have decided anything. If you are curious, or unsure whether you are ready, that is exactly the conversation we want to have.

Call or text Heidi: (805) 458-7841
Email: gsdlifepilates@gmail.com
Or DM @gsdxformerpilates

We are hiring

We will definitely be hiring for New Castle, and there is always room for growth in Carbondale on the XFormers. Depending on numbers we may hold an audition, or we may simply see how the week goes. Either way, this is where we look first.