To eat meat is not a bad thing. The part that concerns me the most is all the additives in grocery store meat these days. That's the part that's not good for you. I try to buy organic whenever possible.
Having been vegan for a few years, I can say that going meatless can be a good break for your body. However, for me it was not a healthy choice for my long term health. Fasting from certain foods is a widespread and ancient tradition probably for good reason.
Well. if you go without eating meat, you have to know how to eat so that you are getting all your required nutrients. I have been a vegetarian for years, and it was trial and error for me at first. At first, I felt tired and exhausted all the time because I wasn't getting what I needed into my body. It helps to do your research and to plan your meals.
But yes, I do agree that not eating meat can often have a positive effect on your body and on the way that you feel.
I haven't tried going a full week without meat. I try to cut down on meat, and there have been very few days in which I was able to get through the day without meat. As such, I couldn't really tell or feel its effect on my body though.