About the authors

Revised authorsBret Contreras, CSCS

Bret Contreras received a master’s degree from Arizona State University (ASU) and a Certified Strength and Conditioning Specialist (CSCS) certificate from the National Strength and Conditioning Association (NSCA). Known in the fitness industry as “The Glute Guy,” Contreras maintains a popular blog.  Contreras is currently pursuing his PhD in Sports Science at AUT University in New Zealand where he interacts with many of the country’s top researchers, strength coaches, physios and athletes.


Chris Beardsley

Chris Beardsley is a popular writer, a biomechanics researcher and a trainer specializing in the use of sports science to help improve athletic performance. Chris achieved a first class honours degree and a masters degree with distinction from Durham University, in the UK. Chris also writes the Strength and Conditioning Research site blog.