Beth Wolfe instructs the following:
This class is filled spurts of High Intensity Interval Training (HIIT) circuits designed to challenge you and quickly lift your heart rate. The fast paced energy will take you out your comfort zone and into your training zone! Get ready for a combination of strength and cardio working at your all our max for 30 minutes!
Insanity is a 45 minute class based on interval training...short intense burst to increase your heart-rate and challenge you to the max. You'll shed hundreds of calories as well as build strength and stamina. There will be no time to be bored in this class!