This. Someone who is out of shape will typically have a slower metabolism than someone who is in shape. Also, in defensive situations the out-of-shape person's

This. Someone who is out of shape will typically have a slower metabolism than someone who is in shape. Also, in defensive situations the out-of-shape person's body can rely more on adrenaline-based fight-or-flight mechanisms potentially leading to anxiety, which can then encourage comfort-eating and lead to cyclic weight-gain. Once again, everyone wants to boil complex, intricate body and mind mechanisms down to "do this, don't do that." It's absurd. These are sophisticated systems full of roll-on cause and effect, tolerances, etc. not a toaster.