B Strong BFR has quickly grown to be the tool of choice for thousands of users around the globe since its official launch in early 2017. Used as an essential tool by elite athletes, coaches and trainers, doctors, and physical therapists, B Strong blood flow restriction bands get results! B Strong's solutions deliver a system that follows our basic goals of being: SAFE EFFECTIVE AFFORDABLE EASY-TO-USE Led by rehabilitation and human performance innovators Jim Stray-Gundersen, MD and Sean Whalen, the B Strong team also includes fitness icon Kathy Smith and biohacker/actor Mark Wahlberg.