They can be exciting and provide new types of stimulation that the body cannot produce, such as vibrations. They can be used by someone on their own, with partnered sex, or group sex. The purpose of sex toys is to provide pleasure and stimulation through an alternative route than just using people's bodies. The bulbocavernosus reflex is triggered by stimulation of the glans penis or clitoris. A person may also become sexually aroused by touching another person's genitals or other body parts. Sexual arousal is usually triggered through sensitive nerves in these body parts, which cause the release of pleasure-causing chemicals ( endorphins) that act as mental rewards to pursue such stimulation. Masturbation, erotic massage, sexual intercourse, a handjob or fingering are types of physical sexual stimulation involving the genitals. Physical sexual stimulation usually consists of touching the genitals or other erogenous zones. The erogenous zones of the male and female body. Some people practice orgasm control, whereby a person or their sexual partner controls the level of sexual stimulation to delay orgasm, and to prolong the sexual experience leading up to orgasm. Stimulation can be by self (e.g., masturbation) or by a sexual partner ( sexual intercourse or other sexual activity), by use of objects or tools, or by some combination of these methods. Sufficient stimulation of the penis in males and the clitoris in females usually results in an orgasm. The term sexual stimulation often implies stimulation of the genitals, but may also include stimulation of other areas of the body, stimulation of the senses (such as sight or hearing) and mental stimulation (i.e.
Although sexual arousal may arise without physical stimulation, achieving orgasm usually requires physical sexual stimulation. Sexual stimulation is any stimulus (including bodily contact) that leads to, enhances and maintains sexual arousal, and may lead to orgasm.