When you need to rest during a focused session, take the break with solitude.
Don't read the news. Don't browse social media. Don't listen to a song with lyrics.
I often ignored this rule. When I came back from a garbage break, I struggled to rebuild my understanding of the task.
Eventually I learned to just walk. Drink water. Let my thoughts wander, without giving them something new to focus on.
Take a break, but maintain awareness.