What do you do to relieve mid-afternoon stress?

I'm serious about this little survey, although it's easy to see all kinds of potential for some pretty funny answers.

For the sake of argument, here's some answers that don't count:

• finding a bottle of Jack Daniels to drown myself in
• Happy Hour at the local watering hole, etc... (okay, you get the picture)
• giving up and vegging in front of the TV for the rest of the day.

It would be interesting (and fun?) to learn what relatively healthy stress relievers people find to continue on through the rest of the day.

For example: I have a listing appointment in the evening.  BUT a deal fell apart that morning, while I was also caring for a sick child (who threw up on me).... I waited in the doctor's office for 70 minutes past my appointment time, blah, blah, blah....       My stress reliever: a hilarious book by a funny lady! :-)

Now it's your turn; What's your stress reliever??