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Josh Dempsey

CrossFit Level 1 Certified Instructor
USA Weightlifting National Coach
Titleist Performance Institute (TPI) Certified
Bioforce Certified Conditioning Coach
Certified FMS Professional
Tactical Athlete Instructor
Onnit Academy Certified Trainer
Onnit Academy Durability Specialist
MovNat Certified Trainer Original Strength Pressing RESET Certified
Josh is the owner and head coach at Crossfit Silver Spring. He was fortunate enough to be introduced to CrossFit in 2008, and began coaching in 2010. Since then, he’s immersed himself in all things training, nutrition, recovery, wellness to better help his clients achieve their goals. He has extensive experience working with clients ranging from collegiate athletes to business professionals to first responders and members of the armed forces and everyone in between. He is extremely passionate about helping people stay healthy, look good, and perform at their best while advancing his knowledge to better serve his clients needs.
Josh also runs El Jefe Barbell Club, our in-house USAW club affiliate, which is a prominent fixture in the DMV competitive weightlifting scene. In addition to coaching, he is also a competitive 85kg Weightlifter, outdoor enthusiast, and coffee connoisseur.

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Marcos Hernandez
Head Coach

Certified CrossFit Trainer (CF-L2)
USA Weightlifting Level 1 Sports Performance Coach
Onnit Academy Trainer
Hardstyle Kettlebell Certified Original Strength Pressing RESET Certified

Marcos is a CrossFit and Weightlifting Coach who has been training at CFSS since it opened in 2011. He has been coaching since 2012 and began working at CFSS full-time in 2014.

Marcos played soccer for over twenty years and has a special place in his heart for athletes with an endurance background looking to get strong and move better. He has competed in multiple Olympic Weightlifting meets and uses gymnastics training to help himself maintain quality positions and healthy joints.

Marcos is passionate about health, movement, and helping people come up with sustainable long-term solutions to help them reach their fitness goal, whatever it happens to be.


Katie Weddle
Senior Coach

CrossFit Level 1 Certified Instructor
Original Strength Pressing RESET Certified

Katie graduated from Emory University, where she rowed for all 4 years on the crew team. Before college, Katie played both softball and field hockey competitively. After college, she dabbled in various types of exercise, but struggled to find anything that was both fun and effective. She realized she missed the community and friendly competition that comes with being part of a team. Katie first found CrossFit in January of 2011, where she rediscovered the community and competition she had been looking for, and was immediately hooked. What Katie loves most about CrossFit is that it is ever evolving, never boring, and endlessly scalable. She is passionate about helping others foster a love of health and fitness. Katie is competitive CrossFit athlete and 64kg Weightlifter. When she is not at CFSS, Katie is a preschool special education teacher in Montgomery County.


Dana Monsees

CrossFit Level 1 Certified Instructor
Certified Clinical Nutritionist (CNS)
USA Swimming Coach

Dana grew up in Montgomery County in a very competitive, athletic family – starting with soccer, softball and swimming when she was young, then went on to play volleyball and swim in high school. She studied politics and french at Middlebury College, where she also competed for the swim team for all 4 years. During her senior year Dana was introduced to CrossFit and weightlifting for the first time, and she was instantly hooked by the competitive and constantly changing nature of the programming.
After college and working in the field in politics for a few years, Dana shifted her focus to nutrition and went back to school to get her Master’s in Clinical Nutrition and Certified Nutrition Specialist credential. Outside of the gym, Dana has her own clinical nutrition practice, where she specializes in working with women with GI disorders, hormonal imbalances, and disordered eating. She hosts a popular nutrition podcast, is a year-round swim coach for elite age group athletes, and competes as a 64kg weightlifter for El Jefe Barbell.