Volume and duration both matter
The risk from personal audio depends on sound level and how long you listen. WHO guidance emphasizes that louder levels reduce safe listening time.
A practical volume rule
WHO recommends setting personal audio devices to no more than about 60% of maximum and, where possible, staying below an average of 80 dB.
Watch for warning signs
Persistent ringing, trouble hearing high-pitched sounds or difficulty following conversation can be reasons to seek professional hearing advice.
Make the routine practical
Focus is affected by more than one tool. Sleep, task clarity, interruptions, environment, stress, notifications and the difficulty of the work can all matter. A useful routine therefore aims to reduce friction and make the next action obvious rather than promising a dramatic change from a single cue.
Audio can be one optional part of that transition. Some people prefer silence; others like neutral sound or a consistent track. The best test is practical: choose a setup that does not distract you, keep listening comfortable and judge the routine by whether it helps you start and stay with the task you intended to do.
Reference
A small experiment you can run
Instead of rebuilding your entire schedule around a productivity method, test one change for several comparable work sessions. Choose a specific task, keep the session length roughly similar, and change only the element you are evaluating—such as silence versus neutral audio, phone in the room versus out of reach, or an immediate start versus a short transition routine.
Record whether you started on time, how often you switched away from the task and whether you completed the planned next step. The point is not to create a scientific study; it is to avoid judging a routine only by how novel or motivating it feels on the first day.