I would have posted this and started this yesterday had I seen it then. I just saw this today and am starting when I get home from work tonight. I'm posting in case anyone else is interested. I love me some HIIT so I'm looking forward to this challenge.
http://blog.myfitnesspal.com/the-30-day ... challenge/
http://blog.myfitnesspal.com/the-30-day ... challenge/