RECOVER FASTER
REHAB STRONGER
PERFORM BETTER
KAATSU established the BFR market and is the world-leader in Blood Flow Optimization training, recovery, and rehabilitation. Our equipment and protocols have an unprecedented safety track record with over 20 million individual sessions in 69 countries around the globe.
FEATURED IN
KAATSU C4
The KAATSU C4 is built for people who want results without complication. It delivers the core KAATSU experience in its most dependable form. Used by clinicians, trainers, and everyday users alike, the C4 supports strength, recovery, and circulation through gentle, repeatable sessions that fit naturally into daily routines. No app, no distractions. Just a reliable tool that helps your body do what it already knows how to do—adapt, recover, and perform.
DESIGNED FOR REAL-WORLD USE
Ruggedized, compact, and easy to operate, the C4 is made to perform in clinics, gyms, homes, and outdoors. It’s a device that's ready when you are.
PROVEN KAATSU PROTOCOLS
The C4 runs the original KAATSU Cycles that gently guide blood flow through timed inflation and release. This rhythm is the foundation of KAATSU’s effects on circulation, muscle activation, and recovery.
SIMPLE CONTROLS, PRECISE PRESSURE
A clear touchscreen and preset pressure ranges remove guesswork while still allowing fine control. You get consistency from session to session without needing technical knowledge.
TRUSTED ACROSS AGES AND CONDITIONS
From active adults to rehab settings, the C4 supports a wide range of users. Its design prioritizes comfort, gradual progression, and repeatability—especially important for people over 50 or those returning from injury.
HOW IT WORKS
PROCESS
Safe, gradual, and gentle engorgement of blood vessels when using at rest or during exercise.
IMPACT
Increased vascular elasticity and more nutrients, oxygen, and blood flow.
REACTION
Even minimal intensity and low perceived effort leads to production of HGH, IGF-1, VEGF, NO, CRP, β endorphins, BDNF.
OUTCOMES
Muscle hypertrophy, hormonal balance, greater range of motion, and improved muscle functionality.
