What is kegel excerise use .how can i do these?

Pelvic floor tone: Kegel exercises strengthen the muscles of the pelvic floor in both men and women, and are important in preventing incontinence by maintaining pelvic floor muscle tone. Best described as "tightening your anus: all of the muscles of the pelvic floor are connected - contract/"tighten"/hold your anus for 30-60 seconds (like when you're waiting at a red light).