this cites some research for what happens during the stages of fasting. https://usetemper.com/learn/metabolic-step-by-step/ https://usetemper.com/learn/metabol

this cites some research for what happens during the stages of fasting. https://usetemper.com/learn/metabolic-step-by-step/ https://usetemper.com/learn/metabolic-step-by-step/