Pregnant Activities in Amsterdam :)

Hi everyone, my wife and I moved in here just a week ago - I gota contract here and she just took a time off work before having a baby and later looking for work. The problem is that she is really an active and a people person, so staying at home by herself is a lousy choice, so we are trying to find something that she might do in Amsterdam that would take a lot of her timeand would consider her condition (she's 5 months not, but feeling really good). We looked into yoga, but that only happens quite rarely. Do you have any interesting ideas on what you can do in Amsterdam/?

Thanks a lot for your help,

Bartek