At the beginning I thought 'oh, this is nice and light' - if you don't have endurance, it requires some power. Great leg, bum and abs burner, and you don't spend too much time on your back (great if you have back problems)
I read the reviews and was expecting a difficult workout. This wasn't too challenging...not cardio or strength intensive, probably more of a light toning workout. I broke a little sweat. I added weights to some of the leg exercises, but I feel no DOMS today. That said I enjoyed the workout, trainer's messages and enthusiasm. Just wanted more intensity.
I personally categorize every work out as either cardio or strength, this was definitely a strength workout. It was surprisingly difficult and I love a challenge! In my opinion, this is an intermediate or advanced workout. Love the instructor, great energy!
Typically I don't feel sore until next day, but I'm already feeling it in my shoulders and thighs! Did lots of the modifications since I'm getting back into a more regular schedule, can't wait to build my strength to try the more advanced moves.