Hiya, for Pump the only changes I made were inclining the bench as mgm said. I used either 3 on one end and 1 on the other or 2 and none. For ab track in the 2nd Tri (after talking to your Dr) you can do oblique crunches if you want or do your pelvic floor or your back by going on all fours and raising opposite arm and leg (or just one if you're unsteady). I took the time at the beginning of the ab track to run to the loo as I was always desperate by then!

With RPM, just what everyone has said. If you wouldn't be able to sustain a conversation then you are working too hard. I think the thing with me is I really HATE RPM so any excuse to stop was good!

But as long as your Dr says ok you should be able to continue doing what you have always been doing, just modify it. I did Pump and Combat till I was about 36 weeks.

Also if your gym does it, I would recommend doing Body Balance. It was my favourite class during pregnancy and such a treat to give yourself

Good luck, have a wonderful pregnancy