My gym does a group circuit class with a personal trainer and I have found them the best thing I have ever done! We get a core group of people, I have made some great friends and I am still going, 17weeks pregnant - the PT just changes the exercises to suit me. I have learned so much about what I am capable of, how to do a session, exercise ideas and motivation. If PT one-on-one is not an option, then I definitely recommend a group training session.