Same experience. For colonoscopies, instead of all the drugs I just don't eat for three or four days. Stop being hungry late on the 2nd day. Eating after that is just habit, trying to remember not to graze.
Try it, yes, but only if you have sufficient fat stores, lest you lose muscle instead.
If you are fasting for the purposes of losing weight, it literally is the last thing that matters.
Also lifting while in a fasted state is a thing, to prevent this exact scenario.