Deadly heart attacks are more common on a Monday

Is this similar to the story that it rains more on the weekend ? Didn't the analysis show that if you segmented the data into arbitrary chunks it always came back with higher rainfall at the start of end of the period - so if you broken the data up into blocks that went from Wednesday -> Tuesday it would come back and say it rains most on Wednesday. Wonder if something like that is going on here - I am down with the argument about stress and going back to work making it worse on a Monday :)

Sorry I missed the joke. Why is that the case?

Since Mondays are always three days after Fridays, it's pretty clear there is a correlation, the only real question is what's happening on the Fridays, and why would they try to hide that?