Move with Strength. Live with Ease.
Mindful classes designed to help you feel better in your body and brighter in your life.

Feel strong, vibrant, and healthy
The 150 Community
When you join the 150 Community, you’re not just logging workouts — you’re stepping into something bigger. This is where accountability meets fun, and showing up actually pays off.
Here’s how we keep it interesting:
- The 150 Tab tracks your progress all year, giving you something tangible to chase.
- Our Monthly Bingo brings just the right amount of competition to keep you engaged.
- Every month, you’re in the running for ticket giveaways and prizes, just for being consistent.
- At the end of the year, we host a grand prize giveaway, rewarding the ones who truly showed up.
We built this community to make commitment feel less like a grind and more like a win. You can join online anytime — because at The OPC, the work you put in should feel worth it.
We are a grip sock required studio.
Grip socks must be purchased at the studio. We offer a variety of grip socks.
Grip sock rentals are $5.

Donelle Gregston
Meet Donelle
Geary, OK to Dallas, TX to Sarajevo, Bosnia to Marlow, OK — Donelle Gregston has built a life (and a business) that moves people, literally and figuratively.
She’s the founder of Oklahoma Pilates|Core, teaching Pilates, barre, and yoga for nearly two decades with a blend of classical training and a no‑nonsense, modern approach that actually works — and sticks.
Her philosophy? Show up, do the work, and have some fun along the way. Donelle has guided hundreds of students toward stronger cores, more confidence, and healthier lives, always keeping things real, approachable, and a little addictive.
Beyond the studio, Donelle runs a travel agency helping people reset and recharge through unforgettable experiences around the world. She’s also a long‑time advocate for essential oils and holistic wellness, teaching others how to use natural tools to support mind, body, and mood.
When she’s not teaching or traveling, she’s dreaming up new ways to make the OPC community thrive — from monthly challenges and giveaways to that signature vibe that makes everyone feel like they belong.
I love the tips and teaching you do, Donelle. Learning how to quiet my mind during savasana has helped so much.
Treva
July 2025: Yintha™

I’ve loved every minute of every class!!
Mel H
July 2025: Hitting 25 classes in the 150 community

Paige the classes today were great! I’m super proud that I’m showing up for early classes. It has made a huge difference in how I feel and I can think more clearly in the mornings! Thank you ladies for all you do for us in studio and outside!
Angie
July 2025
