If the body needs calories to survive, how can it go into starvation mode and slow down the metabolism? I hear of people trying to lose weight who can’t because they aren’t eating enough calories. Does your body shut down certain systems? If there is a base minimum, how can “starvation mode” change that on a biological level?
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Another note to add onto what others said is that your body will divert blood from areas in the brain to the body which is why people who don’t eat for multiple days become disillusioned and start to break from reality. Body will send blood to the stomach lining to provide what minimal sustenance it can abs things like the eyes, smell and taste will start to go.
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