P90X Day 48: Kenpo X

Using weights to increase the intensity of Kenpo X has really paid off -- I'm feeling the burn in my shoulders even during moves like knee kicks, when I have to reach overhead with my dumbbells before bringing my knee up to my chest. There is, however, a drawback to clutching weights while trying to keep up with the speed of some of the jabs, punches and blocks: After 45 minutes or so, one tends to get tired and a little sloppy. I ended up with a nice, purple bruise from slamming a dumbbell against my pelvic bone during the elbow series. All in all, though, it's not bad for my first P90X-related injury.