Yup I use them all the time to tighten up those wonderful muscles down there. I've only tinkled on myself twice but that's because I had to pee super bad then coughed nothing was holding that back. I also did them after my first baby amd y ex said I went right back to normal down there. They're a great thing to do.
I did them my first pregnancy. I didn't rip, nor tear, and my daughter was 7.5oz 19in
I have not beendoing them as much this time and am trying to get better...they are suppose with recovery. and prevent problems when you're older