Utilization of BFR technology combats the loss of muscle in an injured limb during the inactive period after injury. With BFR, a rehabilitation professional may be able to manipulate the athlete’s protein synthesis into a positive state. This way patients are able to get the benefits that accompany heavy lifting early in the recovery process before they are cleared and/or if they don’t have the strength for it. Numerous patients could benefit from BFR rehabilitation, including those recovering from: knee ligament reconstructions, Achilles repairs, fractures, knee cartilage repairs, muscle strains, nerve injuries, rotator cuff repairs, severe musculoskeletal trauma, symptomatic knee osteoarthritis and total joint replacement.

During BFR training, patients wear inflatable belts around the upper portion of the arms and/or legs to safely slow the flow of blood in the limb. The belts are inflated to individualized pressures prescribed by the B Strong Training SystemTM, and simple, low-load exercise produces muscle burn comparable to intense anaerobic training. This strong fatigue produces hypertrophy and strength gains on par with traditional weight lifting exercises.


BFR rehabilitation uses a specialized restrictive device to put individualized amount of pressure on an exercising arm or leg in order to minimize the effects of limited extremity use, shorten rehab time and enhance patient outcomes.




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Mark Wahlberg

"I get results. I'm getting twice the pump in half the time and getting more results, and I've been able to work twice as hard.  

B Strong, Baby." 


"I started B Strong BFR workouts when I was recovering from a hip injury. The benefits of these short workouts in strength and fitness were surprising. I found

B Strong not only helped make me stronger in my injury side but also throughout my body."

Knee Reconstruction Patient

"Anyone going through a surgery like mine (ACL, PCL, LCL) I would definitely recommend this as a form of exhausting your body, exhausting your legs, and being able to build the muscle and build the strength to make progress."


Gain More While Doing Less

One of the biggest benefits of BFR training is the ability to achieve the same results from low intensity resistance exercises as those achieved through high-intensity resistance training (i.e weightlifting). With BFR training, you use much lighter weights. This makes BFR training ideal for people that cannot lift heavy weights due to injury, age or other factors.

Increased Strength and Muscle Size

Even though very light weights are used, BFR training increases protein synthesis similar to traditional strength training. The increase in protein synthesis combined with reduced muscle damage puts the body in the best possible position for building lean muscle. Because BFR causes less muscle damage, gains have been observed faster than in traditional strength training.

Anti-Aging Effects

BFR training with B Strong stimulates the production of Growth Hormone which helps promote growth of lean muscle. BFR training produces a “systemic effect” due to the hormonal release into the body’s circulatory system. While only arms and/or legs may have been under restriction, the hormonal release into the blood stream goes everywhere and benefits any are of the body that was exercised (core, back, etc).  Doing low intensity workouts with B STRONG allows you to get the maximum benefits without the wear and tear on your body. 


BFR training allows individuals recovering from a hard workout, competition, or injury to maintain physical fitness, increase strength, and reduce atrophy. By limiting blood flow to the muscles, users can work the muscles without placing excessive weight on the limb.  If a part of the body is comprised from being able to tolerate normal training, BFR may provide an alternative form of training to still fatigue the body without added stress.  In addition, the systemic aspect of BFR means that non-compromised parts of the body may be trained as normal, so instead of sitting around waiting for the body to repair itself, you can actively produce an anabolic release (i.e. Growth Hormone, etc) that benefits all parts of the body.  For injury recovery, always consult a qualified medical professional for proper care and guidance.


  • How does B Strong Blood Flow Restriction Training work?

    BFR is a breakthrough in understanding of how the body adapts to training stress and builds muscle, bone, blood vessels and tendons. The B Strong Training System works by slowing down or impeding the flow of blood exiting the limbs through the veins. As your muscles work, they use up available oxygen and other nutrients and normally the circulation brings more oxygen and removes metabolic waste products.

    Because the circulation has been impeded, there is not enough re-supply of oxygen to the muscle, nor enough clearing of metabolic waste products. The “environment” of the muscle fiber deteriorates to the point where muscle contraction cannot continue and other muscle fibers have to take over to perform the exercise. Soon all fibers in the muscle go into a state of “failure” and one cannot continue. You recognize this state as muscle burn or fatigue followed by not being able to do anymore repetitions.

    Your brain senses the distress and responds, as it normally does, by initiating autonomic and hormonal responses in an attempt to mitigate the conditions in the muscle and to adapt to the demands of the exercises. This process is the normal process of adaptation to severe exercise, but usually to get to this state, one must perform severe exercise like maximal weight lifting or many running intervals. This type of severe exercise usually damages the tissues involved.

    In the case of BFR Training, the situation was created by a combination of light otherwise easy exercises but with the blood flow to those muscles impeded. As a result of the distress in the muscle, growth hormone and other anabolic hormones are released into your blood stream. This hormonal cascade goes throughout the body and facilitates the repair and building of all tissues that have been working or were injured.

  • How long will it take to see an effect?

    By using B Strong BFR bands along with the guidance app, you should see a marked improvement on the order of 10% strength gains in as little as 10-15 sessions if done 3-5x per week, 1x per day. Our application is designed to keep you safe and work your way toward the pressures that are appropriate for you, as each individual is different. B Strong is much more than just BFR bands. We bring you the expertise in an easy-to-implement fashion so you can simply Pump up ‘n Go™.

  • Can B Strong BFR be used even after an injury like a bone break or muscle tear?

    Yes, B Strong is uniquely suited to allow continued strength training while not disturbing the healing injury. If, for example, one tears their right ACL, they may continue B Strong BFR TrainingTM on the other three extremities as normal. In addition, they may perform light B Strong BFR TrainingTM on the injured extremity as long as it does not produce pain in the injured part.

  • Is there a recommended period of time to wear B Strong bands?

    There is no optimal time to use B Strong. However, you may enjoy your B Strong blood flow restriction training session more if you establish a regular schedule. It is not recommended to do B Strong right after a large meal and for some, doing B Strong or any exercise just before bedtime may impact their ability to fall asleep.

  • What types of exercises can you do with B Strong training system?

    You can do any exercise you can imagine with your B Strong Training System™. The most important point is to follow the guidance of the app. In the app, you should follow the B Strong regimen for sets and repetitions to achieve muscle failure.

    Any light weight or partial body weight exercises can be performed with the B Strong Training System™. Jim Stray-Gundersen, MD, BFR expert and co-founder of B Strong, recommends starting with the basic exercises described in the app, then gradually incorporating exercises most specific to the activities relevant to your lifestyle. Examples include cyclists “B-ing” Strong on a stationary bike with BFR bands on their legs or baseball players throwing with BFR bands on their arms.



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