Well I know it wasn't physcologicall if that's what you mean by constantly thinking about it. Although I do have to agree I am very light of weight having 5% bodyfat (mostly muscle). Basically, are you saying that it's a few hours for "most" people and more for lightweights? Because I'm still extremely low in bodyfat and it doesn't happen anymore (due to tolerance). BUT! Wouldn't that mean it's not true about being done with in a few hours time and leave the option for up to a month possible?