Strong pelvic floor muscles are essential to a healthy pelvic floor. Exercising the Kegel muscles helps prevent leakage of urine with cough, laugh and sneeze and can also be used to save you from an embarrassing leakage episode when a strong urge hits. Furthermore, strengthening those muscles can improve enjoyment during sex and enhance orgasms. Weak Kegel muscles can go into spasm and cause pain so keeping them strong is important for that reason as well. Pelvic floor muscles can become weak after pelvic floor surgery, inactivity, neurologic diseases such as Multiple sclerosis, or, of course, pregnancy and childbirth.
Sometimes you can isolate these muscles and strengthen them on your own, but others may need to work with a pelvic floor physical therapist to get them on the right track. Keep squeezing!