The world of conventional medicine, over the centuries, has made a great deal of progress, allowing it to help sick people better and better. Interest in natural medicine has also had an impact on modifying the views of traditional medicine, which has accepted natural treatments as an alternative to support recovery. This has particular reference to the fight against stress, which is the affliction of today's civilisation. There are many methods, proposed by non-conventional medicine, that allow one to relax and free oneself from the negative effects of stress.