Exogenous ketones can serve as a beneficial, non-fermentable energy source for the brain and help achieve a favorable glucose ketone index.

“if it's difficult for them to achieve a glucose ketone index of one to two one of the tools in the toolbox could be to consume exogenous ketones during that fasting period I think it can be helped and you can also consume them during the feeding period too and they provide an extra source of calorie”