Core: Yes. The program's Cardio Abs workout focuses on your middle section. Arms: Yes. You'll use your own body weight to sculpt your arms, chest, and shoulders. Legs: Yes. Insanity uses a ...

I completed the 42-minute cardio circuit sample workout that Insanity's parent company ... But the level one drill and the ski abs? I think I only did one full set of each, and modified the ...