There are various relaxation techniques and relaxation procedures. Relaxation techniques also play an important role in hypnosis. The best known relaxation techniques are autogenic training, progressive muscle relaxation, fantasy journeys, yoga, breathing exercises, Tai Chi, Qigong, meditation and hypnosis. Relaxation techniques aim to induce physical and mental relaxation and are used for stress, psychological and psychosomatic complaints and many other ailments. Relaxation techniques also play a role in hypnosis, they are often used to initiate hypnosis with breathing exercises or even inner resting images. Autogenic training also evolved from hypnosis and also uses suggestions to induce a state of relaxation.