Doesn't matter if your're a fitness novice or an elite athlete.You should be starting each workout with a stretching regimen designed to warm up your body and help you achieve a new personal best each time.Without the expertise of a professional trainer and without an expert's understanding of muscle anatomy, it can be hard to know what exercises are best.You'll learn when and how to do a tricep stretch and a shoulder stretch, when to avoid toe touches and hamstring stretches, and why it's important to keep your neck relaxed during a hip flexor stretch.Go beneath the skin and see just which muscles you are working during each stretch.Full-color photos and illustrations show every move and muscle in detail.