Sometimes a good old fashion break is all you need to revitalize yourself. Today think about what you like to do to get away from the piles on your desk. Do whatever you need–go visit a colleague for a 5 minute chat, just fill up your water bottle or coffee mug, step outside for a moment, stand up and stretch.
Do what you like to do. Sometimes the very smallest break can rejuvenate you. Today, you pick, but try it now!