About
**Underground Boxing & Fitness** in South Brooklyn, NY (609 Ave X, Brooklyn, NY 11235), stands out with its gritty, raw vibe that channels an authentic boxing gym experience, focusing on mastering fundamentals like footwork, defense, head movement, punch techniques, combinations, strength, conditioning, calisthenics, flexibility, and sparring for all skill levels.[2][1] They offer 90-minute group classes for kids (ages 4-9), teens (10-17), and adults (18+), plus personalized private training, with flexible memberships starting at $180/month for 2x/week or $250 unlimited, and day passes at $25.[2][3] Ideal for self-defense, fight shape, and phenomenal results in a positive environment, it's highly rated at 4.8/5 (205 reviews) for intense, sweat-drenched workouts that prioritize real boxing over cardio fluff.[2][1]