I saw too many teen female athletes being injured shortly after completing Your Lower Back (1993). Since 1995, I have trained more than 600 adolescent female athletes in all sports and cheering with remarkable results; no non-contact ACL (knee) injuries - called the 'silent epidemic' by the experts. I wrote They're Not Boys... to explain why all female athletes need to train to play sports. I am certified as a Specialist in Exercise Therapy and Sports Nutrition.