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Meet Jason Feairheller

Currently Jason is co-owner of the gym, Function and Strength, which is centered around developing explosive, powerful athletes. When Jason began his training career in 2007, he had an interest in developing athletic speed and power, and over the 10+ years, that interest has turned into a passion. In addition to training, he has lectured on strength and conditioning as an adjunct professor at Immaculata University. Jason has been sought out for his knowledge and application for speed and power development. Jason has also been featured on several podcasts talking about his concept of Multidirectional Power. He has also contributed articles on speed training, as well as taught the course, “Functional Speed Training for the Fitness Professional and Healthcare Provider.” Jason is also cohost of the popular podcast, The Speed and Power Podcast.

Testimonal #1

“As a coach I am constantly searching to improve. “Improving Game Speed with Multidirectional Plyometrics by Jason Feairheller” is the type of resource that gets me excited about our profession and the direction it’s heading. Jason does an amazing job of breaking down the importance of training in a multidirectional manner using explosive techniques to improve game speed. This is a product every coach should have in their library if they are serious about improving their athletes performance”.


Lee Taft

Testimonal #2

I met Jason and began to follow his Multidirectional Plyometrics Program through a shared mentorship program we are both a part of.  I was immediately impressed by the effectiveness of his program in developing power and explosiveness in athletes who play multi directional sports as it simply makes sense!  I purchased his first course to gain deeper insight and understanding of his program to use with the field hockey athletes I am training. Jason is a great teacher, and his presentation and explanation of drills/skills is extremely concise, systematic and progressive in nature, and easy to incorporate in daily training sessions.  Best of all, his program works! Two players in particular said they felt stronger, more powerful, and possessed more quickness during indoor play this winter. Really looking forward to his next course, and will continue utilizing his program this spring and summer for clinics and camps. Thank you Jason! 


Cecelia (Cece) Cardano

Total Game Evolution 

Speed and Agility Coach NSPA

Original Strength Level One

W.I.T.S Personal Trainer

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