Isocaloric studies have been done. I don’t have links handy but if you search a bit I’m sure you can find them. Ray Cronise has done some interesting work on t

Isocaloric studies have been done. I don’t have links handy but if you search a bit I’m sure you can find them. Ray Cronise has done some interesting work on the body’s metabolic priorities: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5326984/pdf/met.2016.0108.pdf https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5326984/pdf/met... In short, you’re basically right that eating fat along with carbs or protein will cause your body to store the fat and burn the other fuels it has available instead because storing fat is cheap.