I hate the "so busy - yet not doing anything" feeling that leaves me feeling dazed and confused. Sometimes a good run does it for me, a good sweat.. Then I come home, shower up... and BAM I got endorphins flowing and things just get snappier and more in focus...
Haba, your suggestion actually works for me too... I've noticed that I often have falls early in the morning, so I decided that I will allow myself to think about falling but first I need to get on the elliptical and do it for 4 miles while listening to Imus... Amazingly, I have absolutely no desire whatsoever to fall once I'm done... and I feel better throughout the day too...