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Welcome to being

Trained By Stef Callens!

Voted Top 10 Personal Trainers in Denver - 2018 & 2020

Stef is the owner and head trainer at
 Vitality Training Studio located
8116 W Long Dr Unit D Littleton, CO.

"Working out was not something I thought of as fun...... But now, I'm even a fan of squats! Every week I feel stronger and more confident in myself. Stef has a large variety of workouts and is very good at adapting them to each persons ability. She's great!" - Kim

Online Personal Training

I offer virtual personal training. Service includes:

  • Personalized Workouts 

  • Exercise Library

  • Bi-Monthly Check-Ins

  • Accountability

In-Personal Training 

I offer personal training services at Vitality Training Studio in Littleton, CO. 

Services include:

  • Individual Training

  • Small Group/Partner Training

  • Group Classes

  • Run Training Plans

  • Nutrition Coaching


Enjoy workouts and exercises by subscribing to my YouTube channel

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