What causes the most heart attacks?

Smoking, alcohol and irregular sleep habits often cause heart attacks
me: Smoking, alcohol and irregular sleep habits often cause heart attacks.

Do most heart attacks occur Monday because of what we eat Sunday, according to 7/15/13 Time magazine -- they do. >>

True, over-eating is one cause, but there are others -- weekend let down, nothing to look forward to, don't like the boss, would rather be somewhere else, the realization that you'll be doing the same dull thing the rest of your life.