This workout doesn't mess around. I workout everyday and I was struggling to keep up, especially on the first section "Hot Body Cardio"...wow! I also loved the amount of cardio that is featured on this DVD. I really liked the instructor, Amy Bento. She was very encouraging and gave helpful instructions. I can definitely feel my muscles after this workout plus I feel that I got a good cardio workout, too. The toning sections "Ab Assault and "Rock Bottom Sculpt" had some really unique moves that I have not done in other workouts. I will be adding this to my rotation to do on a regular basis, that is for sure!