Kempo X Aka Kickboxing

This was a Fun workout, Time went by fast and I was sweating up a storm. But I can't help but feel I am either A). In Amazing Fighter Shape, Or B). Did most of the workout wrong. Because although I was sweating a lot and working I don't feel exhausted or really tired at all. Which is strange, because i felt even more tired during the 40 minutes I did yoga. But oh well I did it, and I feel great!