This is a very high impact workout that will have you gasping for air. Shaun T. is a awesome fitness instructor who will keep you motivated throughout the entire workout. This workout system is pure cardio with added body weight moves incorporated throughout several of the dvds in the kit. I had to personally modify 90% of the workout moves throughout this workout. I did not find this to be a huge issue for me since I was aware this would be a fast pace workout. During my workout sessions I had to take several breaks to catch my breath and rest. I always keep a bottle water and towel handy every time I workout to Insanity. I did not follow the workout plan exactly because I knew it would be too much impact on my body. My clothing is fitting better than it had before starting this workout. I have lost several pounds as well but with that being said I do rotate my daily workout routines. This workout kit includes 10 workout dvds, workout calendar and nutrition guide. This is a great workout and overtime I am sure I will be able to keep up with Shaun T. during my workout.