For me, eating reduces productivity, as well as drinking alcohol, so I abstain from both while working. The distinction being that while working I modify my behavior to be productive, however, during leisure time I do not have the goal of being productive, I have the goal of relaxation and my preferences now include food and sometimes drink.
On average, I work 8-10 hours before eating because I choose to eat in a way that is time consuming. Every meal is cooked using basic cuts of meat and vegetables as they were grown. This takes time to prepare but not much skill. I use my attentive hours to work and choose to cook during my less attentive hours.
