A.J. Neibel was born and raised in Cupertino, and attended Cupertino High School and lettered in Football, Soccer and Baseball. He continued his baseball career as a pitcher in college at West Valley College and then transferred to California State University, Long Beach. During his pitching career at Long Beach, A.J. suffered a rotator-cuff injury to his shoulder. After surgery to repair his shoulder, he went through months of physical therapy. It was then that A.J. decided to make Sports Medicine a career.

While at Long Beach, A.J. received his B.S. degree in Sports Psychology. He continued his education and received his Physical Therapy Assistant degree at Cerritos College. In 2000, A.J. also received his certifications as a Certified Strength and Conditioning Specialist through the National Strength and Conditioning Association (NSCA) and Certified Personal Trainer through the National Academy of Sports Medicine (NASM). Recently, A.J. has received his certifications as a Level 1 Olympic lifting coach and level 1 sprint coach through the United States of America Weightlifting (USAW) and Canada/USA Olympic. He also has his certification in Russian Kettlebell.