Ive just started the diet, after beginning on a raw food diet last year and failing.  Recently I went on vacation in Toronto and Montreal, and the breads and beers there are amazing!  So when i came back, I researched the paleo diet, and quit all the neolithic foods cold turkey.  I also amped up my excercise by walking 4 extra miles a day(to work) on top of walking all day at work(waitress in a bar-hence the love of fine beers and breads )
I had an amazing amount of energy for the first 5 days, and never felt the debilitating hunger pains between meals(its difficult to eat during working hours).
As of now, I am exausted.  Last night and today, all I have wanted to do when 7o clock rolled around was crawl into my bed and fall asleep!  Maybe its the World Cup , but this seems very sudden.  Is there a drop of energy I should have expected?  Maybe lack of grain based carbs? 
Please help!  Im too young to be this tired so early!!!

So how long does it take before you start to feel better on this diet? I have just heard of this diet and was thinking about trying it. But I have kids and school and I can't be down to long.

You may not see quite as many benefits, though.

Until the fruit is lowered of course.