Pelvic muscles help stop the flow of urine.
Pregnancy, childbirth and being overweight can weaken the pelvic muscles. Women who leak urine may have better control of these muscles by doing pelvic muscle exercises called Kegel exercises. At the bottom of the pelvis, several layers of muscle stretch between your legs. The muscles attach to the front, back and sides of the pelvic bones. Two pelvic muscles do most of the work.