People do not live on a thermodynamic knife edge. There is a very wide leeway of excess intake that allows our body to burn energy “wastefully” or store it based on a hideously complex set of factors.

The idea that everyone is fat because we’re somehow more sinful (gluttonous, slothful) than in the past has repeatedly failed to resolve any problem except for the need for smug people to pat themselves on the back for using thermodynamics in a sentence.