FIND YOUR CALM

GO DEEP AND FIND YOUR CALM AT THE EDGE OF YOUR LIMITS

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What to expect at deep end fitness

Our sessions are designed for all levels, providing a safe and effective training experience for everyone—from non-swimmers and beginners to professional athletes.

  • A group of people in swimming caps and goggles talking and socializing at the edge of a swimming pool, with water and poolside concrete visible.

    WATER SAFETY PROGRAMMING

    Our training is rooted in water survival and water safety instruction. All levels of swim and fitness welcome!

  • People swimming and diving underwater in a pool, with blue tiles and lane markings visible.

    CO2 TOLERANCE TRAINING

    Build your CO2 tolerance, improve your heart rate variability, and learn to regulate your body through your breath.

  • Two people swimming underwater in a pool, with one person pushing the other on the back, both wearing goggles and swimwear. The person on top is holding a black bag.

    STRESS RESPONSE CONDITIONING

    Learn to regulate your nervous system with stress response conditioning in a safe and controlled environment.

  • Group of five adults swimming underwater in a pool, wearing swimsuits and goggles, with a man in front holding black weights.

    BOOK A CLASS

    Dive into our underwater hybrid workouts at a location near you!

    SIGN UP
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    TRAIN ONLINE

    Not near a location? Looking to supplement training at local sessions? Get the benefits of Deep End Fitness anywhere you are!

    LEARN MORE
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    FIND AN EVENT

    Look ahead to Deep End Fitness coming to your city and sign up for an intro workout, pool launch, or course near you!

    SIGN UP

BENEFITS OF DEEP END FITNESS

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    BUILD RESILIENCE

    Regulate your body’s nervous system through controlled stress responses and build adaptive resilience to everyday life.

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    REDUCE STRESS

    Reduce anxiety by 28.6% and stress by 23.7% through Deep End Fitness programming.

  • A woman in a blue swimsuit doing a plank exercise on the bottom of a swimming pool while holding a dumbbell in one hand.

    LOW IMPACT CONDITIONING

    The water and our deep end programming are great for rehabbing and safely entering into a new workout routine!

  • An underwater scene in a swimming pool with two men, one with tattoos and goggles, and another assisting him. The man with tattoos is holding a black water bag labeled 'GORUCK', and both are framed by the pool's lanes and other swimmers in the background.

    MAXIMIZE YOUR PERFORMANCE

    Practice pushing past negative self-talk and develop a FREE mindset to reach your full potential.

DIVE IN WITH ONLINE TRAINING

Our DEF Online Membership delivers structured weekly workouts, coach feedback, and a supportive community of teammates all training toward the same goals.

You’ll track your progress, connect directly with DEF coaches, and build your CO₂ tolerance, breath hold capacity, water confidence, and mental resilience through proven DEF training methods.

EXPLORE ONLINE TRAINING

get apparel + merchandise

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upcoming events

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founded by U.S. Military special operatORs

Deep End Fitness is a Veteran-founded company that’s making major waves in the swim, fitness, and military communities.

Founders Prime Hall and Don Tran met in 2009 when they were both preparing for the Special Operation Assessment Selection.

They quickly became close friends and spent a lot of time training to increase their water skills and water confidence.

Together they developed a unique hybrid approach that encompassed the pool, lifting and functional fitness, and most importantly - mindset training and how to navigate adversity and stay calm under pressure.

Both successfully went on to become Special Operation Marine Raiders, Marine Corps Water Survival Instructors, and they’ve successfully helped thousands of people and service members around the globe take their fitness, health, performance, and mindset to the next level.

In addition to Deep End Fitness, Don and Prime founded Operation Resilience, a nonprofit that provides support, mentorship, and healing to the Military, Veteran, and First Responder Community.

- go deep, make calm your competitive edge

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