At this point, I'm getting very little out of Kenpo X.
For a while, the addition of dumbbells helped increase the intensity level of the moves, but over the past couple of months, my body has gradually adjusted to the use of weights. It's frustrating to devote an hour to exercise, only to realize that the time wasn't productively spent: My heart's no longer beating out of my chest, and although I broke a (light) sweat during my morning workout, I never had to reach for a towel. I normally sweat buckets, so the relative lack of perspiration is the most telling sign that I'm ready to graduate to a more intense cardio routine. I only have two more Kenpo X sessions before my 90 days are up, but I'm seriously considering whether to switch to Plyo (or even an Insanity workout) instead.