21 Day Fix

Anyone have experience with this program? A friend of mine is a coach and I'm considering joining her next challenge once I'm fully cleared from my c-section to exercise again. Being a working mom of a newborn I like the idea of the short daily workouts, the ease of the portion control containers to pack my lunches, and the fact that it's all safe while breastfeeding. Any comments, positive or negative, are much appreciated, thanks!