Under the influence of the stressful situations arising in dreams, besides movement of eyes and characteristic wave radiation of a brain warm activity is stirred up also. Sexual reactions, for example an orgasm, especially at teenage boys are not excluded also. Depending on intensity of a dream sweat allocation can amplify, become frequent breath. Besides, lying in a bed, people often extend before themselves hands is anything other, as reaction on dreamed. Such reaction is characteristic for the first phase of a dream.