Stages of sexual arousal

Sexual desire, also known as libido, is the name for interest in sex. Everyone's desire for sex is different and it can vary between men and women, and according to things such as age, events that happen in your life, your state of mind and changes in the body. For example, most women find their desire for sex changes throughout the menstrual cycle, when they are pregnant or breast-feeding and after the change of life (the menopause). Feelings and relationships can greatly influence the desire for sex in many people.
Excitement or arousal is the awakening of sexual feelings, when we feel 'turned on' and ready for sex. These feelings can be produced by simply seeing someone we fancy, being touched by or touching our lover, thinking about sex, or having our sexual areas touched. Arousal may, or may not, lead to orgasm.
Plateau is the phase where the body maintains a heightened state of arousal. The body is very sensitive during this phase.
Orgasm is the sexual climax and the feelings of intense pleasure that occur as areas of the body go into a series of rhythmic contractions. Some women can feel the uterus contract. Men ejaculate semen, unless they have had surgery (vasectomy) that affects the production of sperm.
Resolution is the phase that follows sexual arousal and orgasm. This is when the sexual changes in the body go back to normal. Men cannot usually be excited again for a while. However, many women can be aroused to orgasm again straight away. As people get older, they tend to lose the ability to become sexually excited repeatedly