The general problem of fasting and extremely reduced intakes is that the metabolism slows down. Also you first lose a lot of muscles, then a bit of fat—when going on eating normal you burn less than before (because of less muscles) and therefore gain more fat. So for your body’s composition I would say: Don’t do it. (There is this great German book called “Die Physik des Abnehmens” = “the physics of weight loss” in which a physicist explains all this things very nicely)
However: I personally tried fasting for the mental effect, I was able to concentrate even better than normal, I liked the feeling of being “independent” from food and of being able to get through all of this things. (But I will not do it again because I try to get less body fat :) )
As a physicist, I would not trust a book about weight loss by a physicist unless they also studied nutrition at an academic level.
Actually, I wouldn’t trust a book about weight loss by anyone who hasn’t studied nutrition at an academic level, that field is incredibly hard and it’s too easy to simplify.
The general problem of fasting and extremely reduced intakes is that the metabolism slows down. Also you first lose a lot of muscles, then a bit of fat—when going on eating normal you burn less than before (because of less muscles) and therefore gain more fat. So for your body’s composition I would say: Don’t do it. (There is this great German book called “Die Physik des Abnehmens” = “the physics of weight loss” in which a physicist explains all this things very nicely)
However: I personally tried fasting for the mental effect, I was able to concentrate even better than normal, I liked the feeling of being “independent” from food and of being able to get through all of this things. (But I will not do it again because I try to get less body fat :) )
As a physicist, I would not trust a book about weight loss by a physicist unless they also studied nutrition at an academic level.
Actually, I wouldn’t trust a book about weight loss by anyone who hasn’t studied nutrition at an academic level, that field is incredibly hard and it’s too easy to simplify.