You feel every discomfort of every sentient being that was directly and specifically necessary for the goods and services you use.

For example, if you bite into an apple, you can feel the hot air and sweat while you're picking it. You feel the pain in your back while you're driving it cross-country to a distribution center. Your feet ache in the last hour of scanning groceries at the store (where applicable. It's crazy some cashiers have to stand).

I've skipped a lot of steps, but you get the idea.