Crucible Self Defense
    Adult self-defense students practicing a safe punch to a training pad

    ALLEN, TEXAS · EST. 2011

    REAL-WORLD SELF-DEFENSE. REAL CONFIDENCE.

    Practical Krav Maga and self-defense training for everyday adults.

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    PRACTICAL SELF-DEFENSE

    KRAV MAGA

    STRONG COMMUNITY

    TRAINING SINCE 2011

    INSIDE XCELLENCE FITNESS

    Train With Purpose

    • Two adults practicing Krav Maga partner defense

      Krav Maga

      Practical, no-nonsense self-defense training for real-world confidence.

      Explore Krav Maga
    • Two women practicing a controlled self-defense drill

      Self-Defense Fundamentals

      Awareness, movement, and decision-making for real-life situations.

    • Athlete training with a medicine ball

      Conditioning & Skills

      Functional fitness, resilience, and technique.

    ABOUT CRUCIBLE

    Self-Defense Trainingfor Real Life

    Practical self-defense training with welcoming, supportive coaching for everyday adults. Build real skills, get in great shape, and be part of a strong, down-to-earth community.

    Learn More About Crucible

    • Beginner Friendly

      No prior experience or athletic background needed. Start where you are.

    • Real Self-Defense

      Practical skills for real situations, including striking, awareness, and grappling concepts.

    • Strong Community

      A welcoming, family-oriented training environment where you'll feel supported and challenged.

    • Krav Maga Based

      A practical, adaptable approach combining striking, grappling, and real-world self-defense.

    Crucible Self Defense students and instructors smiling together after training in their martial arts gym

    Why Adults Train at Crucible

    • Confidence

      Develop the skills and mindset to handle real-world situations.

    • Awareness

      Learn to recognize, avoid and manage potential threats.

    • Conditioning

      Build functional strength and endurance that supports you every day.

    • Community

      Train with a welcoming group of people who have your back.

    MEET YOUR INSTRUCTOR

    Meet Your InstructorMike Coffin

    Chief Instructor. Since 2011 Crucible has helped adults in Allen build confidence and practical self-defense skills. Mike combines Krav Maga, movement coaching, and real-world technique with an approachable teaching style.

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    • Krav Maga Instruction

      Practical skills for real-life situations.

    • Movement & Performance

      Efficient functional movement.

    • Experienced Coaching

      Dedicated teaching since 2011.

    Crucible martial arts instructor demonstrating a defensive movement during class

    Start With a Free Trial

    See what Crucible is all about with a no-pressure free trial class.

    • 1. BookChoose an available class time.
    • 2. Show UpMeet the team and get oriented.
    • 3. TrainExperience a real class and a welcoming community.

    BOOK YOUR FREE TRIAL

    Choose a class, date, and time for your first Crucible Self Defense session. Beginners are welcome. Please arrive five minutes early.

    FREE TRIAL

    CONFIDENCE STARTS HERE.

    • Your first class is free
    • Beginners welcome
    • Meet our instructors
    • Inside Xcellence Fitness
    Black training gloves and padded focus mitts resting on a gym bench in a modern self-defense studio.

    1. CHOOSE YOUR CLASS

    Choose a class to see available dates.

    November 2026

    Choose a class, professional if needed, and date to see available times.

    Reminder Notifications

    You'll receive reminders at these times before your appointment:

    1 day

    TRAIN MORE. SAVE MORE.

    MEMBERSHIPS

    Choose the monthly plan that fits your training rhythm.

    • 4 CLASSES

      $79 / month

      • 4 group classes each month
      GET STARTED

    • 8 CLASSES

      $99 / month

      • 8 group classes each month
      GET STARTED

    • UNLIMITED CLASSES

      $129 / month

      • Unlimited group classes
      GET STARTED

    TRAIN ON YOUR SCHEDULE.

    CLASS PACKS

    Flexible options for occasional training and extra classes.

    Questions Before You Start?

    Here are answers to some of the most common questions.

    Visit Crucible

    Crucible Self Defense

    Conveniently located inside Xcellence Fitness.

    Inside Xcellence Fitness, 801 S Greenville Ave Ste 108, Allen, TX 75002

    Phone: 469-777-8288

    Get Directions

    Your First Step Starts Here

    Discover what practical self-defense training can do for your confidence, fitness, and peace of mind.