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Phil Sempier

Owner/Head Coach
As Owner of CrossFit Flemington, Phil brings 20+ years of experience in the fitness industry. He is a Level 2 CrossFit instructor, ACSM Certified Personal Trainer and a Level 1 Attitude Nation Olympic Lifting Coach.  Phil began coaching because he passionately believes in the life-changing benefits of functional fitness. In early 2009, while researching exercise programs to find the best workout  for his then personal training clients, Phil found CrossFit. His goal as a fitness coach is to inspire individuals to make long-term lifestyle changes, and he found that CrossFit’ s scalable intensity and commitment to functional movement makes it the perfect program for individuals of all ages and abilities. Phil obtained his Level 1 CrossFit Certification in mid 2009 and opened CrossFit Flemington shortly there after.
Phil believes that the psychology of sport and fitness training plays a vital role in the success of any program. He fosters a positive training environment to help clients overcome self-doubt or perceived limitations to achieve their full potential. He is passionate about helping and motivating people to be the best they can be. He finds nothing more rewarding than helping others reach their goals, achieve new personal records and successfully overcome obstacles that once appeared insurmountable.
CrossFit Level 2 Trainer
CrossFit Mobility
CrossFit Football
CrossFit Judge
ACSM Certified Personal Trainer for 20+ years

Jon North’s Attitude National Olympic Lifting Certified

Debbie Tyer

debbie
CrossFit Level 1 Trainer
Bio coming soon
CrossFit Level 1 Trainer
Anatomy Certificate
Judges Certificate
Scaling Certificate
Spot The Flaw Certificate

Miguel Holguin

CrossFit Level 1 Trainer
Bio coming soon
CrossFit Level 1 Trainer
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Jaime doing a one handed handstand

Jaime DeSanto

CrossFit Level 2 Trainer
Jaime is a Level 2 CrossFit Certified trainer in addition to having her Level 1 Attitude Nation Certification. She has been a part of the CrossFit community since completing her first WoD in 2012. She immediately fell in love with the program due to the undeniable results and great people. In her words, “It doesn’t matter what results you are looking for… CrossFit will get you there faster!”
While working as a Network Engineer at AT&T, she obtained multiple CrossFit Certifications and became Director of Operations at CrossFit Flemington. Jaime is an accomplished fitness professional with experience in managing and leading groups, individual, and youth fitness programs. She has the uncanny ability to motivate diverse groups and to implement healthy and productive changes.
CrossFit Level 2 Trainer
CrossFit Mobility
CrossFit Football
CrossFit Judge
Jon North’s Attitude National Olympic Lifting Certified
CrossFit Kids
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Chris Migliaro

CrossFit Open Article CrossFit Level 1 Trainer

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Alicia Tallmadge

CrossFit Level 1 Trainer
Bio coming soon
CrossFit Level 1 Trainer CrossFit Judge
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Stephanie Casertano

CrossFit Level 1 Trainer
Stephanie takes care of most of the behind the scenes administrative work at CrossFit Flemington as well as having her Level 1 CrossFit Certification. She is also in charge of member relations at CrossFit Flemington.
Her journey with CrossFit began in 2012. She has been a part of CrossFit Flemington unofficially since day one, helping paint walls and build structures before completing on-ramp, as well as played an integral role in all special events.

She came on board at CrossFit Flemington officially in February of 2013, doing administrative work and billing and managing member services. With a new baby you won’t see her face as much, but she’s still there behind the scenes.
CrossFit Level 1 Trainer CrossFit Judge