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Andrew Haberman

Andrew graduated from Temple University in 2011 with a B.S. in Kinesiology. He has spent the last decade in the fitness/ sports performance industry; helping weight loss clients, people with special needs (including those with Parkinson's Disease, Cerebral Palsy, Multiple Sclerosis, and Spinal Cord injuries), and high-level athletes, including multiple professional football and baseball players. He been published twice for his work helping athletes return to the field more quickly following injury. He is one of the co-owners of Physical Development Center.

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Melissa Haberman

Melissa graduated from Lock Haven University in 2013 with a BS in Exercise Science. After college, Melissa worked as a personal trainer, as well as, managing multiple local gyms before starting Rock Steady Boxing- Lower Bucks. Melissa is one of our personal trainers, Rock Steady Boxing coaches, and a Co-Owner of Physical Development Center.


Sean Hall

Sean was a four-year letter winner in football and track and field at Ursinus College where he earned a B.S. in Exercise and Sport Science. Sean has extensive college football experience, working with the South Carolina and Averett University football programs. While at Averett, Sean obtained his Master's in Business Administration.

Sean has spent the past 9 years working as a Program Director and Sports Performance Coach, working with hundreds of local athletes, including countless Div. 1 and professional athletes.


Alexa Schaeffer

Alexa fell in love with training when she was in high school. She swam on the varsity team for 3 years and was named captain of the swim team at Notre Dame High School in Lawrenceville, NJ. Alexa then graduated with honors from Saint Joseph’s University in Philadelphia, PA with a Bachelor of Science degree in Biology. Alexa is certified as a personal trainer through the National Academy of Sports Medicine. Alexa’s interests include training athletes, women’s health, and preventative health care. While not training athletes or clients at PDC, Alexa is currently pursing her Doctor of Physical Therapy degree from Arcadia University in Glenside, PA. She is intended to graduate in 2025. 


Chris Linso

Chris grew up playing every/all sports. As an adult, she earned her First Degree Black Belt in Muay Thai Martial Arts. Chris has coached Rock Steady Boxing classes with us since 2018. In 2020, she earned her Personal Trainer Certificate through the American Council on Exercise (ACE). Chris specializes in training people with Parkinson's Disease, or anyone looking to get stronger or in better shape!

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