This was the my main workout during my recent pregnancy. Most everything else I tried held no challenge. Other reviewers have summed it up well. If I had to say I anything negative about this, it would be that it seems rather low budget for the price. Didn't LOVE the music. And Lauren, while in FANTASTIC shape, doesn't seem thrilled to be there. I can't remember if she smiles even once! None of these were a deal breaker for me. Lauren's credentials are excellent. This workout is also an excellent intro to kettlebells.