What you do on a daily basis to keep your focus. This could be taking a 2-3 minute walk (assuming there is coverage, and you have permission to do so), standing up and stretching, or switching to a different task for a while to break up monotony. The interviewer wants to know that you have some kind of "coping mechanism" and don't just plow through work without taking a brief moment to regroup.

Appearing as if you don't need a minute or two occasionally. We all do. If you say, "I just stay hyper-focused until I drop," they won't be impressed. You don't want to say you take a 20-minute break every hour, but you definitely want to show that you have the ability to step away for a moment to collect your thoughts.

"I find I am much more efficient and effective if I just stand up and take a 2-3 minute break when time allows, particularly if I am working on a detailed and/or monotonous project. This allows me to clear my head and refocus on the task at hand."

"I am often tasked with multiple priorities with similar deadlines. If I find myself losing focus, I may put down the task at hand and switch to another one for a while, assuming one is not of MUCH higher priority."