Update after Day 2

I now see why they call it Insanity. After the fit test on day 1 and the cardio circuit on day 2, it's very clear that this program is effective. I'm old and out of shape, so I haven't been able to keep up and make it through an entire workout yet. Even the people in the video struggle to finish each cicuit. Some are not able to complete the whole thing without rest. I'm sticking with it for the entire 60 days though. I've cut sugar out of my diet (for the most part-no more pepsi, candy, etc) so hopefully that, along with eating healthier and portion control will help me get in better shape and increase my metabolism.