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The pubococcygues (or PC) muscle is a muscle that extends from the tailbone to the pubic bone to support the pelvic organs. It can be found in people of all sexes and is also referred to as the "pelvic floor" muscle. The pubococcygues muscle is part of the levator ani muscle.
The function of the pubococcygeus muscle is to control urinary flow, aid in the childbirth process, contribute to overall core stability, and contract during orgasm. Strong PC muscles can help properly position a baby's head during childbirth, lessen incontinence, and bring on stronger orgasms.
The most commonly used exercises for strengthening the PC muscles are called "kegels" after their founder Dr. Arnold Kegel.