We transform driven people into unstoppable athletes.

Expect rigorous training, science-backed programming, and relentless accountability. We crush plateaus with precision coaching and performance tech. Every session is engineered to unlock raw power and explosive speed. Join the squad built to dominate.

Jathan Mahaffey & Hannah Montgomery: J.H. Speed and performance:

A year ago, Jathan found himself facing some of the toughest challenges of his life. During that difficult period, it was Hannah—his girlfriend—who stood by his side, inspiring him to persevere and work harder than ever. Whether it was pouring rain or blazing sunshine, Hannah was there on the field, recording his training sessions and encouraging him every step of the way.

Motivated by Hannah’s unwavering support and the impact it had on his journey, Jathan wanted to pay that forward. Together, Jathan and Hannah decided to help others overcome their own obstacles and reach their athletic potential. That’s how J.H. Speed and Performance was born—a business dedicated to empowering athletes through dedication, encouragement, and expert guidance, just as Hannah had done for Jathan.

Jathan Mahaffey brings a competitive athletic background and a passion for performance training to every client he works with. A former collegiate lacrosse player, Jathan competed at both Wesley College and York College of Pennsylvania as an attackman, developing the discipline, work ethic, and leadership skills that continue to shape his approach to fitness today. During his collegiate career, he contributed offensively as both a goal scorer and playmaker while competing at a high level of NCAA lacrosse.

Before college, Jathan earned All-Conference honors at Annapolis Area Christian School, where he established himself as a dedicated athlete and student of the game. His years of training for speed, agility, strength, and endurance gave him firsthand experience with the physical and mental demands required to perform at an elite level.

Today, Jathan applies that same athlete-focused mindset to personal training. He specializes in helping clients build strength, improve conditioning, increase athletic performance, and develop sustainable fitness habits. Whether working with competitive athletes or individuals beginning their fitness journey, Jathan emphasizes proper technique, consistency, and individualized programming to help each client reach their goals with confidence. His mission is simple: to help clients become stronger, healthier, and more capable both inside and outside the gym.

Core Training Pillars:

Lacrosse-Specific Speed & Agility

Straight-line speed is rarely enough on the lacrosse field. Jathan focuses on multidirectional speed, linear acceleration, and explosive deceleration. Athletes learn the mechanics of the first three steps to blow past defenders or lock down opponents on a re-ride.

Functional Power & Core Stability

Lacrosse requires a balance of lower-body power for driving to the net and core stability for rotational shooting power. Programs are designed to build a strong athletic base that increases shot velocity and allows players to absorb contact without losing balance.

Multi-Directional Change of Direction (COD)

Dodging and cutting require elite ankle stability and hip mobility. Jathan teaches proper foot placement and low center-of-gravity transitions, reducing the risk of non-contact injuries while making an athlete's cuts sharper and harder to defend.

Lacrosse Conditioning & Endurance

Lacrosse is a sport of repeated sprints. Training simulates game-like energy systems so that athletes can execute complex stick skills and explosive cuts even when fatigued late in a game.