I'm currently at the stage of pregnancy where I'm prone to suffering from bad indigestion after meals. I'm using pregnancy as an excuse to 'eat for two' - so I often eat large pizzas, whole trifles (once!) and inevitably suffer bad bellyache afterwards. I then get my DP to rub my back to help me burp because I think it'll be excellent practice for him when it comes to winding the baby! If he's used to dealing with my indigestion- he'll be better at dealing with the baby's colic etc - or that's my logic anyway.
He has had to deal with all the unglamorous sides of my pregnancy but then that's what looking after young babies is all about - so he's well prepared!