Kelly always comes up with clever interval DVDs. This is packed with athletic moves and lots of jumping, which is more that I prefer, but I do the modifications. The options on the menu include the full workout-55 minutes, two separate 30 minute workouts, a 20 minute stretch, and pre-mixes. Beware of the stretch segment where Kelly prefers to do "ballistic stretching" she states her reasons why she does it, but it is ultimately up to the viewer to choose. She stresses that fact as well. On her 30 minute workouts, she doesn't count reps, she counts how much time is left-which she gives 2 minutes. Required are a vareity of hand held weights. She does well on cueing and transitions. Always encourages modifications and low impact. I prefer workout #1 because it has less difficult movements than #2 which had some challenging steps (for me) like pivoting and movements mimicing baseball, lacrosse, and fencing. Overall, it a fun interval workout with new and fresh moves; lots of options and modifications-good value.