This is my favorite prenatal workout. It actually gets me moving around a bit. I'm not the super athletic type, but I've found most other prenatal workouts are downright wimpy by comparison when it comes to cardio, even for my standards.The main 40-minute workout for Complete Pregnancy Fitness starts with an energetic warm-up and then moves to a "Dynamic Movement" section that really gets the heart-rate going (but not overdoing it) while keeping everything low impact. Lots of lunges, squats, and some ballet movements that I found unique and fun. These are interspersed with some strength training for the arms. There is a brief section for floor work (on all fours or lying on your side, never on your back), followed by a stretch and relaxation segment. Other things worth noting:- Erin is great about explaining good posture and form with each movement. Very important in keeping yourself and the baby safe.- It is what it claims: a complete workout. A lot of emphasis is placed on core work and balance as you work other areas of your body at the same time.- Challenging yet safe for all three trimesters.- All exercises utilize furniture you'd find in your living room (coffee table, chair, couch, wall) as opposed to using weights. This is great... unless you are working out in a home gym instead of a living room, in which case you'll have to get creative.- My only real complaint about this dvd is the music: elevator music style nursery songs set to a beat, which, half the time, is not in sync with the workout. The good news is it's not very loud, so you can almost tune it out. The workout itself is so good that I consider this nothing more than a minor irritation.The 20-minute partner workout looks fun and challenging, not to mention a great way to bond with the baby's father. :) I'll admit I haven't gotten around to doing it because I always get such a great workout from the main section, but it is nice to have the option.I LOVE that there is a postnatal workout included as well. Will post a review on this once I have a chance to use it.UPDATE: I tried the postnatal workout several weeks after delivery, and I HIGHLY recommend it, as it helps you safely ease your way back into exercise. It's broken down into 3 progressive segments, all of which help to rehabilitate your muscles (especially abdominal). It only takes 15 minutes a day, and once you've mastered the third segment, you can feel safe in moving on to "real" workouts again. :)