Kegel prophylaxis will help reduce the risk of incontinence. It will also improve the sensitivity of the vaginal membrane.
This method was discovered by geisha in feudal Japan. They used rods with characteristic thickenings. The exercises consisted of tightening the pelvic floor muscles on a device that resisted. Regular muscle hugs strengthened them, as well as resulted in a more sensitive perception of stimulation.
The method of geishas was discovered by Arnold Kegel, who developed a method of exercises on their basis. His recommendations meant that most women, after strengthening the muscles named after him, noted a significant increase in the feeling of sexual pleasure.