> hurting your metabolism What do you mean by this? Do you mean I'm affecting the long term ability for my body to extract energy from food? I very much doubt

> hurting your metabolism What do you mean by this? Do you mean I'm affecting the long term ability for my body to extract energy from food? I very much doubt that a few days of fasting would have any such long term effects. Quite the opposite in fact. Fasting has been clinically shown to have many positive side effects. The book you refer to seems to be about intentionally inducing a prolonged state of starvation which would undoubtedly be bad.