Episode 215: Chris Korfist, Cal Dietz, and JL Holdsworth - Reflexive Performance Reset (RPR)

This episodes guests are Chris Korfist, J.L. Holdsworth, and Cal Dietz.

Unlike most facilities who are staffed by young coaches who rely on their recent playing career and “cool” factor, Slow Guy Speed School is staffed by Chris Korfist, a “sprint guru” with an international following.

With over 55 all-state sprinters and countless other high school all-state athletes, and over 20 years experience, he knows what is appropriate for the athlete in the room and not so concerned about what the pros are doing or someone else journey to where they got.

In fact, the methods have been so effective, Chris has consulted NFL teams, Big 10 Universities, Olympic team and U.S. Special Forces.

JL Holdsworth is a world champion powerlifter, published author and former University of Kentucky strength and conditioning coach. With over 30,000 hours of practical experience and competition best lifts of a 905 lb. squat, 775 lb. bench press, and a 804 lb. deadlift, JL is no doubt one of the strongest and most experienced strength and conditioning coaches in the industry.

JL has been the official speed and performance coach for the Major League Lacrosse, Ohio Machine, for the past 3 seasons. He is a highly sought after speaker and has presented internationally on many topics relating to human performance. He regularly consults with major collegiate, NFL and NHL programs such as The New York Jets, St. Louis Blues, University of Clemson & The Ohio State University.

In 2010 he founded The Spot Athletics and has built that small private training facility into two 20,000sq. ft. locations in the Columbus, OH area. Along with his facilities, JL is the Co-Founder of Reflexive Performance Reset (RPR), an injury prevention and performance system being used by many top sports organizations around the world.


Cal Dietz has been an Olympic Sport Strength and Conditioning coach for numerous sports at the University of Minnesota since 2000. During his tenure, Dietz has trained athletes that have achieved 400+ All-American honors, Teams that have won 33 Big Ten/WCHA championships teams and 10 NCAA Team Champions. He has consulted with Olympic and World Champions in various sports and professional athletes in the NHL, NFL, NBA, MLB, MMA and Professional Boxing.

On this episode guys and I discuss:

  • I the guys to introduce themselves
  • I ask Cal when TriPhasic 2 is coming out
  • RPRs origins 
  • What is RPR?
  • What evidence is there to support RPR?
  • Where can people find out more about RPR and the new RPR level 1 online course
  • I ask the guys if RPR will be hosting any seminars in Europe
  • I ask the guys where people can find out more about them
  • I ask the guys what are they currently reading?


This was an outstanding episode and I hope you all enjoy it as much as we did!

Stay Strong,



Show Notes:

Website - www.reflexiveperformance.com

Online course - RPR - Level 1

Chris Korfist:

Website - slowguyspeedschool.com

Facebook - Chris Korfist

Twitter - @korfist

Instagram - korfist1

YouTube - korfist

J.L. Holdsworth:

Website - www.thespotathletics.com

Facebook - J.L. Holdsworth

Twitter - spotathletics

Instagram - coach_jl

YouTube - The Spot Athletics - Grandview

Cal Dietz:

Website - triphasictraining.com

Facebook - Cal Dietz

Twitter - @Caldietz

Instagram - cal.dietz

YouTube - Calvin Dietz


Videos Mentioned:

Finding Strength: Dr. Tyrel Detweiler and Reflexive Performance Reset

Books Mentioned:

Triphasic Training II A systematic approach to elite speed and explosive strength performance (Volume 2)

Principles of Anatomy and Physiology, 15th Edition 

Darwin's Doubt: The Explosive Origin of Animal Life and the Case for Intelligent Design

Crucial Conversations Tools for Talking When Stakes Are High, Second Edition

The 7 Habits of Highly Effective People

How to Win Friends & Influence People


People and Resources Mentioned:

Mike T Nelson

Douglas Heel

Dan Fichter

Dave Tate

Dr. Nick Riviera

Dr. Michael Kucera

Sean Donnelly 

Thomas Edison 

Nikola Telsa

Dr. Eric Serrano

Dr. Doug Wallace

Kelly Starrett

Mike Boyle

James Smith

American Heart Association

Dynamic Neuromuscular Stabilization

Dr. Tyrel Detweiler

Keir Wenham-Flatt

Track and Football Consortium

Dr. Ben House

Paul McIlroy

Carrick Institute


Show Sponsors:

Ultimate Performance Online Mentorship

To get INSTANT ACCESS to almost 20 hours of World Class online video Strength and Conditioning Information go to upmentorship.com



ALTIS Education


Ultimate Athlete Concepts

Ultimate Athlete Concepts is a multi faceted company, providing the most sophisticated scientific material in sport science. UAC is the worlds leading resource for translated sport preparation educational material. 


National Sports Performance Association

Certified Program Design Specialist

Certified Speed and Agility Coach

Cerfitied Weightlifting Performance Coach

Certified Sports Nutrition Coach


Athletes Acceleration

Complete Warm Up

Complete Speed Training

Complete Speed Games

Complete Jumps Training

Complete Olympic Lifting

Complete Youth Training

Complete Guide to Training the Female Athlete

Complete Core

Complete Sports Conditioning 

Complete Sports Nutrition

Complete Program Design

Sports Camp Empire



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