When I read Ultra-Processed People, (which every American should read, by the way) I was dismayed to find out that exercise doesn’t automatically burn up the calories I consume. For example, when I eat a Snickers bar then compute how long I need to walk to burn those calories, my walk will benefit me, but not by erasing those yummy junk calories. The math doesn’t math that way, which is deeply disappointing to me and also proves that numbers hate me.

Ultra-Processed People shook me for other rea...