The Right Kind of Intermission
Think back to yesterday. Did you take a break to relieve tension or stress? If so, did it involve using a different part of your brain? If not, you probably didn't take full advantage of the time spent.
If many of your recent tasks have been highly mental and you need a break, take on a task that is highly physical. If your work is physical, take on a mental task. You'll be surprised how one nourishes the other.