I was looking at a book the other day that advocated carb cycling. One day of "high" carb and one day of "low" in order to keep your metabolism guessing and working at a higher level. I was rather sceptical, but even his "high" days aren't that high and it's all in the early part of the day. There is also a reset week every 3 weeks, but I haven't gotten that far yet. His exercise plan seems pretty well thought out. It's a lot of squats, push-ups and what not. The cardio part is stuff like jumping jacks. I think the guy's name is Chris Powell. I suppose you could take his premise and do it with all paleo carbs rather than the All-Bran and Kashi that he recommends. I also looked at his meal plan and asked my husband who on earth would eat that nasty sounding stuff!! I've been spoiled by all the yummy things I eat everyday!