My sister Steph and I are doing Insanity to get thin and fit! We are in the third week and it's still killing me. I enjoy it though because I feel great and I love myself more. I still get sore, but it's a good soreness. It means hard work, endurance, and attractiveness. :) My favorite workouts so far are the abs and pure cardio. I always feel so fit after those two workouts! I've done Insanity before. I lost 15 lbs last time and that's my goal this time.