It notes a Greek study in which napping was associated with a lower risk of heart disease, but warns "A randomized trial would certainly help put the issue to rest." Get it, put it to rest...
Over at Knol there were about 1,750 hits, including some simple tips (without an ad) from Michelle Spencer, who has posted 29 short pieces on a wide variety of subjects, ranging from divorce to menopause to picking a digital camera.
Just for fun I asked Knol for links to heart disease and napping. I got 29 hits, including a piece on polyphasic sleep by Adam Eivy (left), which involves taking nothing but naps throughout the day and night, a total of 2-5 hours of dozing per day.
I won't vouch for the technique, but Eivy cited well over a dozen sources.
It seems that, so far, Knol is both wider and deeper than Medpedia. So why is Medpedia getting all the publicity?