In the brain, which mediates wakefulness, the autonomic nervous system, and the endocrine system, leading to increased heart rate and blood pressure and a condition of sensory alertness, mobility. Of patients taking the drugs experience some form of sexual dysfunction, ranging from loss of desire to problems with arousal and an inability to reach erotic. A number of physiological responses occur in the body and mind as preparation for sexual intercourse and continue during it. At the slightest happening which seems to confirm suspicion there is an arousal of bad blood and a quarrel. Arousal is the physiological and psychological state of being awoken or of sense organs stimulated to a point of perception.