kickboxing DVD

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I have a kickboxing dvd I am going to try probably tomorrow. It's called "kickboxing workout for dummies" (in the series, I guess.). I figured I'd try it since I've always been interested in kickboxing workouts but have never really done them before. so anyway my question is how do i log this for exercise? I don't have an HRM, so that's not an option. I think the only kickboxing entry i've seen in the database says "including turbo jam", which it is not of course, and I'm sure it's a lot less intense than that so it wouldn't be a fair estimate. What should I do?