An estimated 41 million American kids playing competitive youth sports today - and more and more kids playing these games year-round, the number of ACL reconstruction surgeries is also on the upswing. Estimates run as high as 200,000 ACL surgeries per year in the U.S. alone, a large percentage of which are being performed on the knees of prepubescent kids. In ''The ACL Book'', you'll find close to 50 ACL-specific exercises designed by Dr. Myklebust, a physical therapist for the Norwegian national women's handball, soccer and volleyball teams, and a world-renowned expert on the science of ACL injury prevention. You'll learn how to better balance your body and strengthen the muscles around your knee to provide greater stability and endurance. Whether you're the parent of active children, a promising young athlete, a coach, or a 40-year-old who lives for his or her weekly basketball league, this book is a must read.