Just fasted for 48 hours (water + black coffee only) … all my other fasts were 24-36 hours. I am naturally energetic, but have Never felt as alert, or focused,. It’s like my body was buzzing. Maybe try it and see how you feel? Just a suggestion if you have not. I ate dinner last night after 48 hours and got full pretty quickly and actually felt lethargic afterwards. I’m not sure we are meant to consume as regularly as we do after this experiment.