Having shed 115 pounds through his own fitness regimen, Syncere "Syn" Martinez became a CrossFit devotee driven to help others discover their dream physiques. His tenacity has propelled him to complete several triathlons and earn certifications in disciplines such as running, Olympic weightlifting, and kettlebell training. Along with his CrossFit Harlem copilot Shanon "Wreck" Morris—a certified level one CrossFit coach and New York state nutritionist—he fosters a competitive atmosphere in their trademark Brutality course, in which he motivates patrons in intense functional training and furious bouts of Battleship. In this course, he pushes patrons to reach their peak endurance, strength, and agility with running, free-weight lifting, and gymnastics maneuvers. Encouraging patrons of all backgrounds, their Afro Brutality line of clothing and CrossFit team celebrate diversity among their client base.

Syn and Shanon ascribe to CrossFit's ever-shifting workout-of-the-day program, and emphasize the development of sound technique to better execute the intensely challenging workouts. Tailored Brutality classes may aim for weight loss, strength, or stamina, and Brutality camp charts a custom fat-burning plan of exercise, nutritional guidance, and really, really hoping. The universal scalability of CrossFit maneuvers ensures that dedicated guests of all experience levels can enlist in CrossFit Harlem's class series.