MEET THE TEAM

JOHN A. DUFFY JR.

FOUNDER

FOUNDER

MARA MURPHY-KUSINS

MASTER TRAINER 

John is the mastermind behind the Cardio Sport® Exercise System.  John’s deep knowledge of how the human body functions, coupled with his supreme mastery of how to apply his knowledge to get elite results, has been the foundation from which the Cardio Sport Exercise System was developed.

Over the past decade and a half, John has personally trained  thousands of people with extraordinary results. Since 2014, he has also taught hundreds of instructors, trainers, athletes, PE teachers and coaches to use his methodologies through Cardio Sport’s national certification initiative.  Through that program Cardio Sport had trained thousands and thousands of people around the world.

BRAND DEVELOPMENT

HILARY HARTMAN

Hilary heads up Brand Development for Cardio Sport & the Cardio Sport ON DEMAND platform. She became involved with Cardio Sport 7 years ago, first as a participant. She is a long time entrepreneur, with over a decade and half of experience working to bring innovation to market.  

 

From the moment she first walked into a Cardio Sport class led by John back in 2012, she knew she had to be a part of sharing it with the world. 

Never before has there been a program that truly engaged the mind of athletes (and the bodies) like this program. As a long time purpose driven athlete herself, mainly with individual sports like snowboarding and white water kayaking, she couldn't get enough. Her passion was ignited and her mission to bring Cardio Sport to the world began. 

 

Mara played both hockey and soccer in her high school years. It was her passion for movement that lead her to become a Cardio Sport Instructor 7 years ago. Mara runs the Cardio Sport headquarter studio and is a Master Trainer featured on the CS On Demand Platform and working directly with our national client-base  to provide post-certification support for successful implementation of  the Cardio Sport Training methodology. Mara loves sharing her passion for Cardio Sport, both in teaching classes and helping other instructors learn to lead classes around the country. Mara is a long time Duxbury resident and holds a business degree from Lasell College.

MASTER TRAINER

MARA MURPHY-KUSINS

CARDIO SPORT INSTRUCTOR

Kate played both lacrosse and field hockey growing up and continued her sports career into college. Kate has a passion for sports, fitness and helping others connect to Cardio Sport. You can find Kate's athletic, high spirited personality in our ON DEMAND platform. Kate is a Junior at Bridgewater State University.

KATE SWART

Amy has a passion for Cardio Sport and high spirit for life. She is driven to move by the music. Her favorite band is Angels and Airwaves. You can find her featured in our ON DEMAND platform.

MELISSA LETENDRE

CARDIO SPORT INSTRUCTOR

AMY GROH

CARDIO SPORT INSTRUCTOR

Melissa's is known for her powerful, but soft spoken intensity.  She is an avid sports lover and huge Patriots fan. She loves leading people through the Cardio Sport adventure, both in person and via video. Melissa can be found leading sessions on our ON DEMAND platform. 

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