This is a fab thread!  I'm on day 5 and feeling pretty sapped.  I'm also going camping this weekend and my friends will be having food.  :-(  
My bf said to start after the weekend but I was so geared up on Monday I wanted to get cracking and figured a bbq was nothing in the grand scheme of getting my dream body but this pm I feel pretty flat and my mouth is so dry even drinking 2L a day!!!