i am also interested in this topic - i am a fairly keen excerciser and am also trying to lose weight which i put on over the christmas period. what i want to know is if they say at the gym that a class is not suitable for pregnant women (ie RPM) then should I avoid it after o?

and how much is too much? Is 4xwk too much at the gym. When do I have to give up running? (ie can i in trimester one?). What about high impact aerobics?