The person you're referring to is talking about a different kind of focus -- focus as in not going off task. Some of us have a habit of getting distracted from

The person you're referring to is talking about a different kind of focus -- focus as in not going off task. Some of us have a habit of getting distracted from the task at hand easily and going off on a HN/Youtube/Reddit/browsing/timewasting session. Continual prompts like this you could catch this within 10 minutes in to a timewasting session and remind you to get back to work. Personally I probably wouldn't use 10 minutes though as it seems a little too frequent and would go closer to the standard Pomodoro time of 25 minutes (which I have personally used and found useful).