I bought a contraption on the recommendation of a friend. It's a cumbersome hinged design made of a hard, bilious-pink plastic (blurgh, I hate pink!). You squeeze the two "wings" between your thighs to exercise your pelvic floor muscles (which, btw, hurts your thigh flesh something chronic). It did nothing for my bladder but instead caused some kind of tear inside - I had minor bleeding for several weeks and, even now, if I lift something heavy I'll bleed a tiny bit. Doctor says take it easy, don't use the contraption again and it should heal. The odd thing is, it worked well for my friend! I must be stronger than I thought.