This practice will help you to relax your body and mind. Through deep relaxation, you will be able to reduce stress and tension, improve your mental clarity, and promote a sense of wellbeing. You will learn how to use breathing techniques, guided imagery, and progressive muscle relaxation to relax your body
From Wikipedia
A relaxation technique is any method, process, procedure, or activity that helps a person to relax; attain a state of increased calmness; or otherwise reduce levels of pain, anxiety, stress or anger. Relaxation techniques are often employed as one element of a wider stress management program and can decrease muscle tension, lower blood pressure, and slow heart and breath rates, among other health benefits.