Aye From what I've heard reported[1] about periods of extreme caloric restriction is that it takes the body around 4 days or so to start dealing with the lack

Aye From what I've heard reported[1] about periods of extreme caloric restriction is that it takes the body around 4 days or so to start dealing with the lack of carbohydrates. Until that point the person feels tired, grumpy, headachy, out of sorts, hungry. [1]act 2: http://www.thisamericanlife.org/radio-archives/episode/259/transcript http://www.thisamericanlife.org/radio-archives/episode/259/t...