If you are one of those women who are 35 and older and plan to have a baby (I gave birth at age 37), I have some news that you can put into your crap pile along with getting the scarlet letters “AMA” (read: Advanced Maternal Age) branded onto your medical files. You are biologically more prone to have multiple babies (twins, triplets, or more) than younger women.
If you hold your pee over and over again for many years you will “denervate” the bladder, or deaden the normal nerve signals. When decades have gone by, you can't regrow the nerves that squeeze the bladder.
Every person who gives birth will have a diastasis (recti), that’s a given. It’s the size that will differ from woman to woman and it depends on how much of the ab wall was stretched. Many women from countries throughout Asia and Africa bind. This is where I find the biggest difference between the US and other countries.