EXERCISE IN ½ THE TIME, WITH ½ THE WEIGHT AND GET BETTER RESULTS! B3 Bands are the result of more than 40 years of research & innovation, with over a million real exercise sessions. Rooted in a scientific breakthrough utilizing Blood Flow Resistance (BFR) during workouts, this technique combines light exercise with the body's natural processes to give you amazing results that change the way you work out forever. Studies have shown that when BFR is done correctly, it's just as safe as regular exercise. It's worth noting that BFR has been used safely in Japan for over 40 years! It's a tried-and-tested method that can help you get fit safely and effectively.