Unpopular opinion: Skipping lunch made me worse at my job, not better.

I used to think working through lunch showed I was hardworking. In my dental office, I would clean extra tools or catch up on notes instead of eating. Then I began feeling tired and missing small things, like appointment times. My boss sat me down and said breaks help you stay sharp for patients. Now I take my full break every day, and I make fewer mistakes. Why do we push ourselves to the point it hurts our work?