Book excerpt: Isometrics, when done correctly, can reshape a person's physique and add strength beyond imagination without the person ever moving a muscle. By powerfully contracting the muscle in an isolation hold, a person can create lean, perfectly sculpted muscles, shed fat, and achieve the unmistakable glow of perpetual youthfulness without ever having to go to a gym or lift weights or invest in expensive equipment. But the power of Isometrics lies in being taught how to do them correctly.