Hey I am a newbie to VC, but Thrice55 told me about this thread and I knew I just had to chime in. I am on my 2nd week of Insanity and it is definitely a love/hate relationship. The hardest workout I have done in a long time, but I have been out of the fitness routine for years now. It has really been a big push to get back into shape and I feel this workout is exactly what I needed to get going. I bought some fitness dvds and tried running outside around my neighborhood while doing push-ups, sit ups, etc., but I couldn't stay motivated and I felt like I was half assing it anyways. Plus it is way too hot outside during the times I have available for workouts so Thrice55 got me the insanity to try out.
For me insanity seems to work. I am only on week 2, but I feel better (regardless of the soreness) and I think I look a little better too. I don't own a scale so I am not sure how much weight I am actually loosing.
Today is my recovery day and I am looking forward to it, even though it still works your already exhausted quads. I feel like the 2nd week is harder than the first and I am sure it will continue to be that way. As you get better and stronger you are able to do more. I struggle the most with the push ups and there is so much plyometrics that sometimes I want to cry! I find myself yelling at the tv and yelling at myself to keep going. That helps too!! Best of luck to all you guys and I'll keep checking in.