Post Lunch Sleepyness

In the last few days, I had to fight sleepyness at about 2-3 pm at my office. I hate this... I've had similar experience in the future, but with all these things to do, I must not sleep. Damn.. I can't hold my eyes.....

zzzz
zzz
zz
z

whoooaahhh....
10 minutes of sleep was enough. 

Follow this curiosity, I googled this and found the article on the New York Times here:
 - That Yawn After Lunch Is Perfectly Normal

See... it turned out that I'm not the only one who has problem with post-lunch-sleepyness.
Now, back to work...