Dr. James Stray-Gundersen


Dr. Stray-Gundersen received his Board Certification in General Surgery in 1985. He then completed Post Doctoral Fellowships in Cardiovascular Physiology and Human Nutrition at The University of Texas Southwestern Medical School (UTSW) where he received appointments as Assistant Professor in the Departments of Orthopedic Surgery, and Cardiology. 

While on the faculty at UTSW, Dr. Stray-Gundersen conducted research and built and directed two World Class Human Performance Centers associated with leading hospitals, St. Paul and Baylor. Dr. Stray-Gundersen’s primary interest and area of research is human performance, the physiology of health and fitness/wellness through exercise prescription, markers of over training, nutrition as it applies to performance and health, altitude acclimatization and training (pioneered Live Hi/Train Low), and anti doping (developed anti doping test SAFE – Safe and Fair Events).

Dr. Stray-Gundersen, along with co-founder Sean Whalen, developed the B Strong BFR Training System. He is currently supervising several research projects investigating the mechanism and benefits of B Strong BFR Systems, as well as supervising clinic operations at the SG Performance Medicine Center.