Mindi O’Brien

 

IFBB Pro Champion • 11-Time Olympian • 10-Time Arnold Classic Competitor • Transformation Coach • Studio Owner • Mother • Grandmother

Mindi O’Brien built her name on the biggest stages in the world — the Olympia and the Arnold Classic — as a world-class professional athlete known for discipline, poise, and an unmistakable presence.

But her greatest transformation didn’t happen under stage lights — it happened in real life.

After decades as an elite competitor, Mindi experienced what so many women do:

  • shifting hormones
  • stubborn weight changes
  • disrupted sleep and energy
  • inflammation and anxiety
  • a body that didn’t respond the way it used to

She was no longer training for trophies — she was fighting to feel like herself again.

And she rebuilt.

Today, as a mother, grandmother, transformation coach, show promoter, and studio owner, Mindi helps women step back into their power — physically, emotionally, and spiritually.

She created Aesthetic & Ageless™ — The Fit & Feminine Formula for women 35+ who refuse to fade with age and who want to feel strong, feminine, confident, and unapologetically themselves again.

You’re not past your prime — your strongest chapter is just beginning.

Dennis Beitler

 

Elite Strength & Performance Coach • Movement Technician • StrongER Program Director

Dennis Beitler brings more than two decades of elite strength and performance coaching to Mindi O’s Fitness. He is recognized for his ability to read movement instantly, correct mechanics with precision, and build strong, capable bodies without ego lifting.

He doesn’t just run workouts — he engineers strength.

Since the late 1990s, Dennis has been Mindi’s:

  • coach
  • training partner
  • business partner

Together they built businesses, developed programs, and helped produce multiple champions — including guiding Mindi through her professional fitness career.

Dennis has coached:

  • competitive physique athletes
  • strength and power athletes
  • men reclaiming health and strength
  • women requiring injury-aware mechanics coaching
  • youth and teen athletes
  • beginners who want to learn proper lifting from day one

He is known for:

  • razor-sharp biomechanics understanding
  • direct but caring coaching style
  • zero-ego training environment
  • focus on longevity, not just numbers

Dennis now leads:

  • StrongER Men’s Strength & Performance
  • Small Group Premium (max 4)
  • athlete development and mechanics sessions

Strong mechanics. Strong muscles. Strong mind. Strong life.

It’s never too late to begin your journey – so join Mindi O today!