" In the same way you create stress and tension you also can create relaxation. The goal of relaxation training is to teach you how to recognize the early warning signs of tension and to counter or replace them with the sensations of relaxation. Interestingly, one way to relax tense muscles is first to tighten them more. If your shoulders feel like coiled springs, draw them up and squeeze those muscles. Hold the pose for five to ten seconds. Feel the stress and study the sensation. Then release and relax the muscles completely. "

― , Mind Gym: An Athlete's Guide to Inner Excellence