Although urinary leakage is common after pregnancy, it is not normal. Pregnancy and delivery can weaken pelvic floor muscles. When these muscles are weak it can be difficult to hold back urine when the urges occur. Pelvic floor muscle strengthening exercises can assist in improving urinary leakage. It is important to know how to perform these exercises correctly. Many women have difficulty isolating the pelvic floor muscles and they tend to compensate with hip, abdominal, and leg muscles.