Punching up the cardio

Here is a review and video of the program that my husband and I have been using for cardio workouts, especially when the weather or our schedule makes it hard or impossible to get a workout outside. I try to get at least 1000 punches in before stopping for the day, which takes between 30 and 40 minutes. What I like is that it does make me work up a sweat... much more than I get from walking or even from jogging.