Meet Jason Alfonso and the JB Athletics coaches
JB Athletics was founded by Jason Alfonso on a simple belief: transformation happens from the inside out. We are a high-energy, family-first community built to help you become your best.
Meet Jason
As a husband, dad to two young girls, and personal trainer, Jason understands firsthand how busy life can get. He believes fitness should work with your life, not against it. His approach to coaching is built around helping people get stronger, move better, and feel their best through personalized training, accountability, and sustainable habits. His goal is to help every client build strength and confidence that carries beyond the gym and into everyday life.
Jason specializes in functional sports performance and myofascial recovery, and coaches with technical precision in every rep and real care for the person doing it.
Clients describe him as patient, clear, and the reason they finish the last set. They also mention the reminder he sends the day before every session.
More coaches, same standard
Jason coaches alongside Coach Joe. Every JB Athletics coach programs with the FOCUS method and the same attention to form, recovery and results.
Coach Joe
Joe coaches one-on-one and semi-private clients at JB Athletics, programming every session with the FOCUS method alongside Jason.
Book a free consult“He's extremely attentive to the individual he's working with, continuing to correct their form, challenges and encourages them to reach that next level.”
“I've been working with Jason for a year and a half now. I'm in better shape now than I was 10 years ago. He makes things fun and keeps you accountable.”
Based at Supreme Athletics in Gaithersburg
In-gym sessions and small group classes run at Supreme Athletics, 8648 Dakota Dr, Gaithersburg, MD 20877. In-home, corporate and online coaching take JB Athletics wherever you are.
Get directionsBook your free consult
Answer four quick questions and Jason will reach out to set up your free consult. You'll see which program we'd start you on before you finish.
- 240-474-0544Prefer to talk? Call us
- thejbathletics@gmail.comEmail
- Supreme Athletics, 8648 Dakota Dr, Gaithersburg, MD 20877In-gym sessions
| Monday to Friday | 5:30 am to 6:00 pm |
| Saturday | 9:00 am to 11:00 am |
| Sunday | Closed |
What do you want training to do for you?
Free, no payment, no commitment.