Not sure about that. Just one pound of fat has the caloric value to sustain you for over a day. 10% BF for males (and 15% for females) is low enough that your m

Not sure about that. Just one pound of fat has the caloric value to sustain you for over a day. 10% BF for males (and 15% for females) is low enough that your mother will probably say that you're too thin. So you could go for a week without ingesting any calories for a week if you were to lose 5% BF while you're sick.