Involuntary muscle contractions during orgasm can involve the anal sphincter, vaginal wall, or pelvic floor. This involuntary action is known as an orgasmic spasm. During orgasm, some people experience anal spasms. These are involuntary muscular movements that cause the anus to contract and squeeze tightly. They are usually felt around the time of climax but can last for several minutes afterward.
Anorgasmia is the condition when you cannot have an orgasm. Some people may feel like they're about to have one, but it never comes. It's thought that these spasms are related to orgasm but don't actually cause it. The spasms could be caused by increased blood flow to the area or nerve stimulation. Orgasmic dysfunction affects both men and women.
The anus is a ring-shaped muscle at the opening of the rectum. It relaxes during bowel movement and tightens before defecation. When the anus contracts involuntarily, it can lead to urge incontinence. Urge incontinence occurs when you need to go to the bathroom immediately, but your bladder doesn't send any signals to tell you. If this happens, you might leak small amounts of urine without warning. This type of incontinence can also happen during sexual intercourse.
Sexual intercourse involves thrusting of the penis into the vagina, which causes the walls to expand. Some women may have experienced vaginal contractions during intercourse. The muscles contract rhythmically, causing the vagina to grip the penis tighter.
Pelvic floor exercises involve strengthening the pelvic floor muscles. These are the muscles that support the uterus, bladder, and rectum. They run from the pubic bone to the tailbone and form part of the perineal muscles. Pelvic floor exercise programs include Kegel exercises and Pilates. Kegels target the muscles that control urination and bowel movements.
When the pelvic floor muscles relax, they allow urine or feces to exit the body. During orgasm, these muscles become tight and pull upwards. This creates pressure on the genitals and increases sensation. The resulting spasms can be quite intense for some people.