Coaching Staff
David Osorio
David comes to the CrossFit community with over 7 years of training experience ranging from physical therapy clinics to competitive speed schools. Additionally, David holds a B.S. in Exercise Physiology from West Chester University of PA and is a Level 1 certified CrossFit Trainer.
CrossFit South Brooklyn was started by David back in 2007 out of St. Mary's Playground in Carroll Gardens. His goal has always been to create a fun and inclusive training environment for people serious about their fitness.
David has also worked as Competition Director for the 2009, 2010 and 2011 CrossFit North East Regional Qualifiers as well as having been featured on the CrossFit Journal.
Contact: David(at)CrossFitSouthBrooklyn.com
Shane Williams
Shane is one of our most diverse coaches and a pillar of this program. With experience coaching a wide variety of individuals, Shane's patience and compassion make him ideal for all newcomers, experienced athletes and youths alike.
Contact: Shane(at)CrossFitSouthBrooklyn.com
Margie Lempert
Margie's expertise lies in barbells and farmers markets. She connects what we eat to how well we move, and is committed to approaching both with sustainability and longevity in mind. As a nutrition advisor, Margie uses a paleo template to guide clients towards better overall health and body composition. As a trainer, her emphasis is on classic strength and conditioning, with an eye towards developing women's ability and confidence under the bar.
She has competed as a powerlifter in the USAPL, and was part of the media team covering the 2010 and 2011 International Powerlifting Federation's World Championships in India and South Africa, respectively. She worked as one of the event coordinators for 2009, 2010 and 2011 CrossFit Northeast Regional Qualifiers.
Margie has been with CFSBK since it first found an indoor home in 2007. She holds CF Level 1 certification, is a Starting Strength Coach, completed Robb's Wolf's Paleo Solution seminar, Greg Everett and Aimee Anaya's Olympic Lifting seminar, Chip Conrad's Strength Camp, as well as CF Gymnastics and Mobility seminars.
Contact: Margie(at)CrossFitSouthBrooklyn.com
Jeremy Fisher
Jeremy's long and diverse athletic background gives him athorough understanding of training, both for a specific sport and for general strength and conditioning. Wrestling, track and field, crossfit and powerlifting are among the disciplines he has pursued competitively. He believes strength is the foundation of life and supports anyone committed to getting under the bar regularly.
In the tradition of Mark Rippetoe, Jeremy's Strength Intensive program has become an important adjunct to CFSBK's CrossFit programming. Through it, he has trained a varied population including male and female novices, deconditioned and recovering athletes, pregnant women, and competitive lifters. In fact, several of his novices have gone on to compete as raw lifters with the USAPL.
Jeremy placed 32nd in the 2008 Crossfit Games, competed in the 2009 Northeast Regional Qualifiers as an individual, and in 2010 as an affiliate team member. In addition, he has competed as a raw lifter with the USAPL.
Jeremy is a Starting Strength coach and holds a CF Level 1 certification. He attended Robb's Wolf's Paleo Solution seminar, Kelly Starret's Mobility and Recovery Seminar and Chip Conrad's Brutal Recess
Contact: Jeremy(at)CrossFitSouthBrooklyn.com
Christian Fox
A former natural foods chef, Christian has been training a variety of populations from 8 to 80 years old for over 6 years now. With a eye for mobility issues, he specializes in helping clients and members gain, train through, and maintain healthy ranges of motion. Since earning an AAS degree in Exercise Science from CUNY Kingsborough he has logged countless hours of continuing ed and certifications including: NASM Certified Personal Trainer/Corrective Exercise Specialist, CrossFit Level 1 Trainer, Starting Strength Coach, CrossFit Movement and Mobiity, CrossFit Endurance, blah blah blah...
Active but not necessarily athletic as a youth, Christian is not only president but also a member of the Former Fat Boy Club. He can help you develop a plan for how to eat and train that can get you to your goals (so long as you’re up for the hard work). His goal is to educate and inspire people to make being strong and fit a lifestyle choice that they stick with long term.
Contact: Christian(at)CrossFitSouthBrooklyn.com
Nick Peterson
Nick is our in house Rowing expert available for 1-on-1 training on the Concept 2 Rowing Machine. Whether you're a novice looking to improve your technique on the erg or an advanced athlete looking to take your rowing to the next level, Nick is your man.
13 Years of Rowing Experience include:
2000 Olympic Games, Quadruple sculls
1998 and 1999 World Championships
Royal Henley Regatta Winner
Rowing Team, Harvard College
Contact: Nick(at)CrossFitSouthBrooklyn.com
Laurel Madar
Laurel arrived at South Brooklyn looking like “two coat hangers in a sweat suit” (to quote Coach Shane). CrossFit appealed to her as a route to gaining strength and conditioning after six years of debilitating illness. Having experienced a broad range of personal health and fitness - from being couch-bound to placing 16th in the 2010 CrossFit Northeast Regionals - Laurel is drawn to coaching to help other people achieve the transformation she has enjoyed. Her athletic background includes gymnastics, soccer, backcountry hiking, and 5 years of argentine tango training including six months in Buenos Aires. She holds CF Level 1 certification and has attended many CrossFit seminars.
Contact: Laurel(at)CrossFitSouthBrooklyn.com
Noah Abbott
Our resident lawman, Noah used CrossFit training to overcome a back injury suffered in Special Agent training, and become a stronger and more explosive "tactical athlete." A L1 CF and CF Mobility Certified coach, Noah has also run a number of road races (and won a few, too!) and is specifically interested in minimalist running technique, minimalist footwear, and minimizing training time for said events. He does not, however, enjoy minimalist music. Sorry Philip Glass.
Contact: Noah(at)CrossFitSouthBrooklyn.com
Jessica Fox
It’s unclear whether the shear boredom of Ohio country life or the influence of a sports-lovin’ family triggered Jess’ athletic endeavors. Jess began playing softball as soon as she was old enough to enroll then quickly added basketball and soccer to keep her busy year-round. After moving to NY for college, Jess took a hiatus from sports…unless you call flip-cup a sport. Unsure how to return to physical activity, Jess gave everything from running to Bikram yoga to kickboxing a try. Luckily, her future husband got her to join a gym, lift weights and eventually led her to Crossfit. Crossfit helped her complete her first Marathon in 4:19, has made her a more powerful hitter in her softball league, and CFSBK has given her a family outside of Ohio.
Jess loves being a strong female role model in the gym and really enjoys pushing female athletes in the same direction. She enjoys working with newer athletes because she vividly remembers falling over the first time she put a barbell overhead. Jess also has a passion working with endurance athletes in hopes of moving them away from traditional long slow distance training.
Jess is Crossfit Level 1, CrossFit Gymnastics and Crossfit Endurance certified
Contact: Jessica(at)CrossFitSouthBrooklyn.com
Josh Martinez
Josh's fitness background is quite different then the other CrossFit coaches we have at the gym. His foundation, passion, and expertise derive from a traditional martial arts called Kyokushin (karate). He started training in Kyokushin when he was 13 years old, and shortly after, began stepping into the competitive ring in both local and out-of-state tournaments. Over the many years of executing countless kicks, punches, blocks, and anything else that was thrown his way, Josh has become proficient in his skills as a martial artist. Yet he still searched for a way to increase his fitness levels even further.
When Josh was introduced to CrossFit, he realized that his fitness was just not complete. He learned that he would have to broaden his training and nutrition to take him to the next level. By incorporating sports like Olympic Lifts, Running, and Gymnastics, and a diet that was more Paleo-based, he acquired a much clearer perception of what fitness really means to him. Once he started competing at local CrossFit events, Josh knew that he had found where he wants to be.
After receiving a CrossFit Level 1 Certification, it occurred to him that he would like to combine martial arts and CrossFit! He has since taken the CrossFit Striking trainers course and is working on making his cutting-edge idea a reality. In the long-term, Josh's objective is to build a fighter's fitness level to CrossFitter by teaching proper striking combinations, and to teach essential self protection skills to the community. The goal is to ensure that the skills learned via CrossFit Striking will not only benefit the athlete/individual outside of the gym, but will also enhance the CrossFitter’s experience and training inside the gym.
Contact: Josh(at)CrossFitSouthBrooklyn.com


