Muscle spasms in the feet, face, and hands may begin during this time as well. The orgasmic phase is the third phase in the sexual response cycle. Just as the name implies, this is the climax of the cycle. It is the shortest of the three cycles, usually lasting only a number of seconds. The orgasm for women consists of muscle contractions in the lower third of the vagina.
Men also have contractions in the penis during the orgasmic phase.
Male orgasms are composed of two parts. First, the emission phase consists of seminal fluid collecting in the urethral bulb. At this point, a man may have the sensation that orgasm is certain. Nothing could stop the orgasm after this point. The second part is the expulsion phase.