max 30 cardio challenge is an application for an insanity max 30 cardio challenge

The first workout in Insanity Max 30 Cardio Challenge. This max 30 cardio challenge takes the place of the Fit Test and serves as the main way to track your fitness.
As your fitness increases, you can go longer before "maxing out" . The max 30 cardio challenge describes the workout like this. "This workout serves as your Fit Test and your introduction to the program. 30 minutes of the hardest cardio sequences you've ever tried...
Welcome to Insanity max 30 cardio challenge."