8 Ways to re-energize your focus

1. Stand up.  Sitting too long makes your brain fart and then get constipated.  
2. Stretch.  If you  have the courage, do a series of bend overs, moving the arms stretches.
3. Decide to make the next person you speak to happy.  Not happy that you did a good job, or happy with the call.  Happy.  They hang up in a better mood.  Usually all it takes  is a focus of happy energy on your part.  Smile, put energy in your voice.  The energy you use when you are in a good mood and you want someone else to be.  If you do this, you will win back your focus and your mood will improve tremendously. 
4. Organize a corner of your workspace.  When your mind stops working, doing a physically organizing task will bring the brain back from the blank or the chaos.  (This also works after a bad call - if you are feeling emotional.)
5. Walk away from your desk.  If you are allowed the option, go to the rest room, fill your water cup, make a copy, - any activity that will walk you away from your desk for 2 or 3 minutes.  
6. Reboot.  Don't wait for the computer to freeze up, do it when your brain does.  I know, I know - can you think of anything more annoying???  No.  But when it's done don't you feel an overwhelming urge to get on with your job, catch up, make up for all of the time you just wasted?  And think how very happy you are making those Help Desk folks.  
7. Tell a friend about a GOOD call.  Not the bad call.  We always turn to the person next to us when the call was bad, or weird.  But mention to the person that you found out something new, you figured out how to answer this question, or who does this, or that the computer does that.  Find an expression for your small successes and you will feel more energy for doing your job right now. 
8. Close your eyes, and count each part of your body.  Weird right?  Yeah, but it works.  You don't have to close your eyes, but it helps.  When I say parts, be pretty narrow.  Count each toe, count the arch of your foot, the heel, the ankle...  It will probably take 2 to 3 minutes to go through your body.  When you are done, take a big deep breath and focus on your next task.   (also good for after a bad, call.)

These work, but there are lots of others.  If you know one, please share it here!