IDEA Health & Fitness Experts

IDEA partners with over 400 of the most respected fitness experts in the world. Find out more about them here.
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Gretchen Ritter

I've been a personal trainer and PT manager for over a decade. I am passionate about transformation of all kinds..physical, emotional and spirtual. I believe in a common sense approach that combines progressive and traditional training methods. I ... more

Michael Rizk

Dynamic biomechanics expert and catalyst for lifestyle management and performance optimization. Entrepreneur, lecturer, author and Fellow of Applied Functional Science with a substantial private client network throughout New York Metro area. Speciali... more

Robert A. Robergs, PhD

Robert A. Robergs, PhD, is a professor and the director of the exercise physiology laboratories at the University of New Mexico in Albuquerque. He has authored three textbooks on exercise physiology, as well as more than 80 peer-reviewed research pu... more

Keli Roberts

Keli Roberts?is a specialized tier-three personal trainer at Equinox in Pasadena, California. She is a master trainer for Schwinn® Cycling and Gliding?, a Kettlebell® Concepts-sponsored athlete and is on the BOSU® development team. Keli i... more

Jani Roberts

Jani Roberts is a nationally-recognized Zumba® master trainer. Certifications: ACE and AFAA more

Kofi Robinson

Kofi Robinson owns Koficore Studio in Minneapolis and is a BOSU master trainer. He teaches and hosts many professional workshops with or without the BOSU Balance Trainer. more

Jessica Thompson

The co-owner and co-head choreographer of Amore Dance in Kansas City. As a Zumba® national master trainer, she has been able to add her expertise in dance to the fitness industry. Certifications: ACE, AFAA more