Train Smarter.
Live Stronger.
20-minute sessions. Personalized by AI. Engineered for longevity. Stackable fitness and recovery programming—designed by data and our longevity fitness team—to optimize your performance and long-term health.
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/How it work
Simple system. Smarter results.
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Test your baseline
Get real data on strength, cardio, metabolism, and biological age using non-invasive assessments.
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Build your program
We use your results to create a personalized plan across strength, cardio, and recovery—adjusted in real time.
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Train with a Coach
Your longevity coach guides every session, stacking workouts and tracking your progress.
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Reassess + Optimize
Every 90 days, we retest and refine. Most members see measurable gains in just a few weeks.
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/What We Do
Services
Adaptive Strength Training
with ARX and OxeFit
Smart Strength redefines resistance training with ARX and OxeFit, the cutting-edge adaptive technology that delivers the safest, most effective workouts available today. Every rep is calibrated in real time to match your exact capacity, eliminating guesswork and maximizing results. In just 20 minutes, you’ll trigger deep muscular growth, enhance bone density, and build functional strength that supports longevity and everyday performance. Each session is seamlessly recorded, analyzed, and optimized. Smart Strength offers a personalized, data-driven approach to your long-term goals.
Cryo-Interval Training
with Vasper
Smart ColdHIIT is a next-generation cardio experience that fuses high-intensity interval training with precision cooling technology, delivering powerful metabolic, hormonal, and recovery benefits in just 20 minutes. By lowering your core body temperature during exertion, Smart ColdHIIT allows you to push harder with less strain, minimizing inflammation while accelerating recovery. The result is a refined, low-impact session that enhances fat metabolism, optimizes hormone function, and supports long-term cardiovascular and cognitive vitality.
AI-Powered Ride
with Carol and LiveO₂
Step into the future of cardiovascular training with our AI-optimized spin experience designed for those who demand efficiency without compromise. This intelligent bike adjusts resistance in real time, delivering a fully personalized ride that evolves with your fitness. Whether it’s a focused 9-minute sprint or a 20-minute endurance session, each ride is meticulously crafted to maximize metabolic impact, boost heart health, and support long-term vitality.
Cold Plunge
Elevate Recovery. Awaken Vitality.
Step into a state of renewal with our state-of-the-art cold plunge experience—engineered to optimize your recovery, sharpen your focus, and elevate your well-being. In just minutes, cold immersion reduces inflammation, relieves muscle fatigue, and activates your parasympathetic nervous system—leaving you feeling calm, clear, and recharged. Beyond recovery, this ritual boosts endorphins, enhances metabolic function, and improves sleep quality, setting the foundation for peak performance and longevity.
Sauna
Sweat with purpose. Recover with science.
Our dry sauna is more than a wellness amenity, it’s a cornerstone of modern longevity. With each session, gentle high heat elevates your core temperature, stimulating circulation, accelerating detoxification, and promoting deep recovery at a physiological level. Unlike infrared, the traditional dry sauna delivers an intense, purifying heat experience that supports cardiovascular health, reduces systemic inflammation, and enhances metabolic performance. It’s a powerful ritual for calming the nervous system, lowering stress, and restoring inner balance.
Red Light Therapy
Precision light for performance and longevity.
Start with any strength level and surprise yourself with continual progress. Our strength training combines exercise robotics, AI, data reports, and personal trainer support for sessions that perfectly adapt to you in real time. Train to failure across all muscle fiber types in 20-minute sessions that give you your time back.
3D Body Scan
Our Smart Scan delivers a full-body composition analysis with no pinching, no guesswork, and complete precision. It accurately measures lean muscle mass, body fat percentage, and weight distribution across key regions of your physique, revealing the structural blueprint of your body. But it doesn’t stop there. Your scan includes personalized metabolic insights, estimated daily caloric needs, and tailored guidance on how many weekly workouts you need to reach your body recomposition goals. It also evaluates health risk indicators like waist-to-hip ratio and fat distribution to help you understand how your body composition impacts long-term health and performance.
LongevityCheck
The LongevityCheck captures your most vital performance and recovery markers, from VO₂ max and metabolic rate to body composition, strength, and stress resilience. This elegant, 45 minute data-driven assessment forms the foundation of your personalized Smart Fit Method Protocol, delivering precisely tailored workouts, recovery tools, and nutrition aligned with your unique physiology and goals. Because when it comes to longevity, precision isn’t a luxury, it’s essential.
Hormonal Health Assessment
Our Functional Health Consultations connect you with world-class naturopathic specialists who embody The SmartFit Method. Using in-studio diagnostics such as VO₂ Max, 3D body scans, and strength metrics, combined with advanced hormone and blood biomarkers, we create a detailed understanding of your internal health. From there, you’ll receive personalized, science-backed guidance to rebalance hormones, reduce inflammation, optimize metabolism, and restore lasting energy. This is true precision wellness, rooted in data, elevated by expertise.
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/Testimonials
Reviews
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/FAQ’s
Your Questions.Answered.
Blog
See all Blog posts
Nov 17/25~4 min read
The Step by Step Guide to Contrast Therapy (Sauna & Cold Plunge)Step-by-step protocol for sauna and cold plunge contrast therapy, including frequency, duration, and how to build a sustainable practice.
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Nov 06/25~4 min read
Menopause Workout: Complete Exercise Guide for Women Over 50The Smart Fit Method offers personalized menopause workouts to build strength, boost metabolism, and improve bone and heart health for women over 50.
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Oct 30/25~7 min read
The New Science of Strength Training After 65: Why Your Doctor's Advice May Be OutdatedLearn the new science of strength training after 65. Discover how adaptive resistance builds muscle, boosts longevity, and prevents age-related decline.
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Oct 21/25~8 min read
How to Train for Ski Season: A Science-Backed Guide to Skiing Stronger and LongerLearn how to train for ski season with science-backed methods that build strength, improve endurance, and prevent injuries. Expert ski conditioning tips from a former top-ranked skier.
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Oct 14/25~9 min read
Strength Training for Women Over 40: The Menopause Exercise GuideFor Menopause Awareness Month, discover science-backed training for women 40+: lift heavy, track body composition & VO₂ max, and swap long cardio for smarter results.
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Oct 07/25~8 min read
The Menopause Diet: What to Eat to Lose Belly Fat After 40During Menopause Awareness Month, discover why traditional dieting stops working for women over 40. Learn how to balance hormones, boost metabolism, and lose stubborn belly fat through better sleep, higher protein intake, strength training, and Smart Fit Method’s science-backed approach to nutrition and recovery.
Read moreIn the Press
See all Press
Jan 09/25
The Smart Fit Method coming to Utah on FOX13 NewsLive from The Smart Fit Method Salt Lake City, How AI Can Transform Your New Year’s Workouts, The Smart Fit Method Co-founders, Rob Darnbrough.
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Sep 30/23
Yorba Linda’s Simone LeCompte featured by CAROL Bikes (The Smart Ride 0₂)It's not every day that a podcast changes your life. For rider Simone, it was the first step in a transformative journey with CAROL. Just 3 months into using her bike, she's now a proud rider and an advocate for others to hop on and experience the change themselves.
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Mar 28/23
How To Lose Weight Fast: 15 Expert-Backed TipsPeople strive to lose weight for myriad reasons, and many fall into the fad diet trap promising real results fast. While there are certainly ways to accelerate your weight loss efforts, it’s important to understand that shedding pounds too quickly can actually backfire.Like so many parts of life, safe, successful and sustainable weight loss is more about the journey and less about a scale-based destination and rapidly approaching deadline. Read on for expert advice on the best ways to lose weight—and keep it off.
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Feb 06/23
Meet Rob Darnbrough of The Smart Fit MethodPeople strive to lose weight for myriad reasons, and many fall into the fad diet trap promising real results fast. While there are certainly ways to accelerate your weight loss efforts, it’s important to understand that shedding pounds too quickly can actually backfire.Like so many parts of life, safe, successful and sustainable weight loss is more about the journey and less about a scale-based destination and rapidly approaching deadline. Read on for expert advice on the best ways to lose weight—and keep it off.
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Jan 24/23
The Smart Fit Method featured on FOX5 San Diego NewsLive from The Smart Fit Method La Jolla, Heather Lake interviews The Smart Fit Method Co-founders, father-son duo, Rob Darnbrough and Connor Darnbrough.
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Jan 18/23
New La Jolla fitness studio uses hybrid training programCompetitive athletes Rob and Connor Darnbrough had a fitness “epiphany,” which led them to pioneer a new hybrid training program called The Smart Fit Method, which they expanded recently into La Jolla. “We’ve developed and perfected an efficient and effective program at our original Cardiff studio, where we’ve helped countless clients achieve total body transformations while freeing up their time to do the other things they love,” said Rob Darnbrough, CEO and co-founder of The Smart Fit Method, which recently debuted at 7863 Girard Ave.
Read moreListen to recentpodcast episodes

Apr 25/2555 min
How Adaptive Resistance Technology Can Transform Your Workouts
by Casey Adams
Dec 24/2455 min
How to Grow A HIT Business Fast and Operate It Like A Well-Oiled Machine
by High Intensity Business

Dec 02/2210 min
261: Upcoming Fitness Trend 2023 - Smart Fit Method
by Rob Darnbrough

Dec 02/2212 min
260: Misson To Cure An Aortic Aneurysm - The Smart Fit Method
by Rob Darnbrough

Jul 02/2222 min
Science-Based Fitness with Connor Darnbrough of The Smart Fit Method
Wellness in San Diego: Food, Movement, Spirituality + Wellbeing









