Some believe that sitting on an exercise ball at work increases your core musculature. The constant movement of the ball may increase our muscular activity. Others argue that the ball actually promotes poorer posture.
No one likes to talk about it, but if coughing, laughing or sneezing makes you lose bladder control, DON'T just accept it. Also, if you feel like you always need to go, there's ways to help you with that too.