Partial thread hijack. Only because the transversus is my favorite muscle too :) Two points.
Best method I've found to teach unconditioned people where their transversus is: Put two fingers just inside the hipbone. Then cough. Ohhhh, THAT muscle!
Key to bladder continence: Relax the bladder! In my personal experience which I suspect parallels that of a lot of fit women, it's not about strength of the pelvic floor, the transversus or anything. It's that no matter HOW strong we make those muscles, a spastic bladder will always be stronger. So stop straining when we pee. Didn't realize you were straining? Neither did I. It takes a lot of conscious awareness to just relax the bladder. And when you're squatting to pee - as a lot of women do when we're "al fresco" or using public facilities - we're predisposed to strain the bladder. Relax the bladder. Visualize a cool breeze blowing across your kidneys. Voila, instant continence!

