As your uterus grows larger and the weight of the baby presses down on your pelvic floor muscles, they may weaken. That's not a good development because these muscles support the organs in the pelvis — the bladder, urethra, uterus, and rectum — and control urination.
But fear not: Kegel exercises to the rescue! Kegel exercises, which are named after the doctor who pioneered their use, strengthen pelvic floor muscles; this makes delivery slightly easier and helps prevent urinary incontinence. The exercises can also help make intercourse more enjoyable.
You can do Kegels anytime, anywhere. A good way to remember your Kegels is to do them at the same time each day or while you're doing a certain activity — riding the bus to and from work, for example.